Patent Publication Number: US-2023155249-A1

Title: Battery including ion barrier layer and electronic device including the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a bypass continuation of International Patent Application No. PCT/KR2022/013382, filed on Sep. 6, 2022, which claims priority to Korean Patent Application No. 10-2021-0158895, filed on Nov. 17, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein their entireties. 
    
    
     BACKGROUND 
     1. Field 
     The disclosure relates to a battery including an ion barrier layer, and/or an electronic device including the same. 
     2. Description of Related Art 
     Advancing information communication technology and semiconductor technology accelerate the spread and use of various electronic devices. In particular, recent electronic devices are being developed to carry out communication while being carried on a user. Further, electronic devices may output stored information as voices or images. As electronic devices are highly integrated, and high-speed, high-volume wireless communication becomes commonplace, an electronic device, such as a mobile communication terminal, is recently being equipped with various functions. For example, an electronic device comes with the integrated functionality, including an entertainment function, such as playing video games, a multimedia function, such as replaying music/videos, a communication and security function for mobile banking, and a scheduling and e-wallet function. Such electronic devices become compact enough for users to carry in a convenient way. As electronic devices are put to everyday use, users&#39; demand for portability and usability of electronic devices may increase. According to such user demand, secondary batteries which are chargeable and dischargeable, as a power source for electronic devices, are used. 
     A lithium ion battery used as a secondary battery includes a combination of electrode assemblies each including a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode may include an electrode substrate and a mixture coated on the electrode substrate and containing an active material. The lithium-ion battery may convert chemical energy into electrical energy by redox reactions at the positive and negative electrodes and may transfer the electrical energy through a positive electrode tap connected to the positive electrode and a negative electrode tap connected to the negative electrode. The capacity of the battery is basically proportional to the size of the area where the positive electrode and the negative electrode face each other. Therefore, in light of design or process, it may be most efficient to make the positive electrode and the negative electrode in the same size. However, in this structure, Li ions from the edge of the positive electrode (including the side of the coating) may accumulate on the edge of the negative electrode, deteriorating the reliability and safety of the battery (a Li dendrite buildup). Therefore, the related art requires that the negative electrode are manufactured to have a greater size, rendering it difficult to maximize battery capacity and causing many design limitations. 
     SUMMARY 
     According to one or more embodiments of the disclosure, a battery may have an increased area of positive active material layer for storing positive ions and may have capacity increased by suppressing ion dendrites generated at the negative electrode. 
     The disclosure is not limited to the foregoing embodiments and various modifications or changes may be made thereto without departing from the spirit and scope of the disclosure. 
     Technical Solution 
     According to an aspect of the disclosure, a battery includes: a negative electrode including a negative electrode substrate layer and a negative electrode active material-coated negative electrode mixture layer on the negative electrode substrate layer; a positive electrode facing the negative electrode, the positive electrode including: a positive electrode substrate layer; a positive electrode active material-coated positive electrode mixture layer provided on the positive electrode substrate layer; and a barrier layer configured to suppress transfer of ions from the positive electrode active material-coated positive electrode mixture layer; and a separator provided between the negative electrode and the positive electrode, wherein the positive electrode active material-coated positive electrode mixture layer includes a first area at a center area of the positive electrode active material-coated positive electrode mixture layer and a second area at an edge of the positive electrode active material-coated positive electrode mixture layer, and wherein the barrier layer covers at least a portion of the second area and is further configured to limit direct transfer of the ions from the first area to the negative electrode. 
     The second area may include at least a portion from an upper edge area of the positive electrode active material-coated positive electrode mixture layer to a side surface of the positive electrode active material-coated positive electrode mixture layer extending from the upper edge area. 
     A thickness of the second area may be smaller than a thickness of the first area. 
     The second area may be formed by etching at least a portion of an upper edge of the positive electrode active material-coated positive electrode mixture layer or may be thinner than the center area of the positive electrode active material-coated positive electrode mixture layer. 
     A length of the second area may be 5% to 10% of a length of the first area. 
     The barrier layer may be provided on at least a portion of the positive electrode substrate layer. 
     The battery may further include an insulation layer configured to suppress movement of electrons, and the insulation layer may be provided inside or outside at least a portion of the barrier layer. 
     The insulation layer may cover at least a portion of the positive electrode substrate layer. 
     The barrier layer may include at least one material among a metal nitride or a polymer material. 
     The barrier layer may be deposited by any one of chemical layer deposition, physical vapor deposition, or atomic layer deposition. 
     A width of the negative electrode active material-coated negative electrode mixture layer may correspond to a width of the positive electrode active material-coated positive electrode mixture layer. 
     The battery may be a jelly-roll type battery or a stack type battery. 
     According to an aspect of the disclosure, a battery includes: a negative electrode including a negative electrode substrate layer and a negative electrode active material-coated negative electrode mixture layer on the negative electrode substrate layer; a positive electrode facing the negative electrode, the positive electrode including: a positive electrode substrate layer, a positive electrode active material-coated positive electrode mixture layer provided on the positive electrode substrate layer; and a barrier layer configured to suppress transfer of ions from the positive electrode active material-coated positive electrode mixture layer; and a separator provided between the negative electrode and the positive electrode, wherein the positive electrode active material-coated positive electrode mixture layer includes: a main area configured to store cations and including a transfer area configured to transfer the cations to the negative electrode; and an additional area extending from the main area and configured to store the cations, and wherein the barrier layer covers the additional area and is configured to suppress the cations stored in the additional area from being directly transferred to the negative electrode. 
     The additional area may include a barrier receiving area having a thickness that is smaller than a thickness of the main area, and the barrier layer may be provided in the barrier receiving area. 
     The barrier layer may cover at least a portion of the positive electrode substrate layer. 
     The battery may further include an insulation layer configured to suppress movement of electrons, and the insulation layer may be provided inside or outside at least a portion of the barrier layer. 
     The insulation layer may be provided on at least a portion of the positive electrode substrate layer. 
     The barrier layer may include a metal nitride or a polymer material. 
     The barrier layer may be deposited by any one of chemical layer deposition, physical vapor deposition, or atomic layer deposition. 
     According to an aspect of the disclosure, an electronic device includes: a processor; and a battery configured to supply power to the processor; wherein the battery includes: a negative electrode including a negative electrode substrate layer and a negative electrode active material-coated negative electrode mixture layer on the negative electrode substrate layer; a positive electrode facing the negative electrode, the positive electrode including: a positive electrode substrate layer; a positive electrode active material-coated positive electrode mixture layer provided on the positive electrode substrate layer; and a barrier layer configured to suppress transfer of ions from the positive electrode active material-coated positive electrode mixture layer; and a separator provided between the negative electrode and the positive electrode, wherein the positive electrode active material-coated positive electrode mixture layer includes a first area at a center area of the positive electrode active material-coated positive electrode mixture layer and a second area at an edge of the positive electrode active material-coated positive electrode mixture layer, and wherein the barrier layer covers at least a portion of the second area and is further configured to limit direct transfer of the ions from the first area to the negative electrode. 
     Advantageous Effects 
     Provided is a battery including an ion barrier layer disposed on a positive electrode mixture to control the transfer path of positive ions to a negative electrode. Therefore, a battery may have a capacity of a positive electrode active material increased and side effects, e.g., ion dendrites, reduced or prevented. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and/or other aspects, features, and advantages of certain embodiments will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a block diagram illustrating an electronic device in a network environment according to various embodiments; 
         FIG.  2    is a front perspective view illustrating an electronic device according to various embodiments; 
         FIG.  3    is a rear perspective view illustrating an electronic device according to various embodiments; 
         FIG.  4    is an exploded perspective view illustrating an electronic device according to various embodiments; 
         FIG.  5    is a view illustrating an implementation example of a battery according to various embodiments; 
         FIG.  6    is a perspective view illustrating an electrode configuration of a battery according to various embodiments; 
         FIG.  7    is a front view illustrating a battery according to various embodiments; 
         FIG.  8    is a top view illustrating a battery according to various embodiments; 
         FIG.  9    is a view schematically illustrating an electrode assembly according to various embodiments; 
         FIG.  10    is a view illustrating an ion barrier structure according to various embodiments; 
         FIG.  11    is a view illustrating an ion movement in an ion barrier structure according to various embodiments; 
         FIG.  12    is a view illustrating an ion barrier structure including an insulation layer according to various embodiments; 
         FIG.  13    is a view illustrating a process for manufacturing an ion barrier structure according to a first embodiment; 
         FIG.  14    is a view illustrating a process for manufacturing an ion barrier structure according to a second embodiment; 
         FIG.  15    is a view illustrating a process for manufacturing an ion barrier structure according to a third embodiment; and 
         FIG.  16    is a view illustrating a process for manufacturing an ion barrier structure according to a fourth embodiment. 
     
    
    
     DETAILED DESCRIPTION 
       FIG.  1    is a block diagram illustrating an electronic device in a network environment according to various embodiments; 
     Referring to  FIG.  1   , the electronic device  101  in the network environment  100  may communicate with an electronic device  102  via a first network  198  (e.g., a short-range wireless communication network), or an electronic device  104  or a server  108  via a second network  199  (e.g., a long-range wireless communication network). According to an embodiment, the electronic device  101  may communicate with the electronic device  104  via the server  108 . According to an embodiment, the electronic device  101  may include a processor  120 , memory  130 , an input module  150 , a sound output module  155 , a display module  160 , an audio module  170 , a sensor module  176 , an interface  177 , a connecting terminal  178 , a haptic module  179 , a camera module  180 , a power management module  188 , a battery  189 , a communication module  190 , a subscriber identification module (SIM)  196 , or an antenna module  197 . In some embodiments, at least one (e.g., the connecting terminal  178 ) of the components may be omitted from the electronic device  101 , or one or more other components may be added in the electronic device  101 . According to an embodiment, some (e.g., the sensor module  176 , the camera module  180 , or the antenna module  197 ) of the components may be integrated into a single component (e.g., the display module  160 ). The processor  120  may execute, for example, software (e.g., a program  140 ) to control at least one other component (e.g., a hardware or software component) of the electronic device  101  coupled with the processor  120 , and may perform various data processing or computation. According to one embodiment, as at least part of the data processing or computation, the processor  120  may store a command or data received from another component (e.g., the sensor module  176  or the communication module  190 ) in volatile memory  132 , process the command or the data stored in the volatile memory  132 , and store resulting data in non-volatile memory  134 . According to an embodiment, the processor  120  may include a main processor  121  (e.g., a central processing unit (CPU) or an application processor (AP)), or an auxiliary processor  123  (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor  121 . For example, when the electronic device  101  includes the main processor  121  and the auxiliary processor  123 , the auxiliary processor  123  may be configured to use lower power than the main processor  121  or to be specified for a designated function. The auxiliary processor  123  may be implemented as separate from, or as part of the main processor  121 . 
     The auxiliary processor  123  may control at least some of functions or states related to at least one component (e.g., the display module  160 , the sensor module  176 , or the communication module  190 ) among the components of the electronic device  101 , instead of the main processor  121  while the main processor  121  is in an inactive (e.g., sleep) state, or together with the main processor  121  while the main processor  121  is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor  123  (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module  180  or the communication module  190 ) functionally related to the auxiliary processor  123 . According to an embodiment, the auxiliary processor  123  (e.g., the neural processing unit) may include a hardware structure specified for artificial intelligence model processing. The artificial intelligence model may be generated via machine learning. Such learning may be performed, e.g., by the electronic device  101  where the artificial intelligence is performed or via a separate server (e.g., the server  108 ). Learning algorithms may include, but are not limited to, e.g., supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-network or a combination of two or more thereof but is not limited thereto. The artificial intelligence model may, additionally or alternatively, include a software structure other than the hardware structure. 
     The memory  130  may store various data used by at least one component (e.g., the processor  120  or the sensor module  176 ) of the electronic device  101 . The various data may include, for example, software (e.g., the program  140 ) and input data or output data for a command related thereto. The memory  130  may include the volatile memory  132  or the non-volatile memory  134 . 
     The program  140  may be stored in the memory  130  as software, and may include, for example, an operating system (OS)  142 , middleware  144 , or an application  146 . 
     The input module  150  may receive a command or data to be used by other component (e.g., the processor  120 ) of the electronic device  101 , from the outside (e.g., a user) of the electronic device  101 . The input module  150  may include, for example, a microphone, a mouse, a keyboard, keys (e.g., buttons), or a digital pen (e.g., a stylus pen). 
     The sound output module  155  may output sound signals to the outside of the electronic device  101 . The sound output module  155  may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record. The receiver may be used for receiving incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker. 
     The display module  160  may visually provide information to the outside (e.g., a user) of the electronic device  101 . The display module  160  may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display  160  may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch. 
     The audio module  170  may convert a sound into an electrical signal and vice versa. According to an embodiment, the audio module  170  may obtain the sound via the input module  150 , or output the sound via the sound output module  155  or a headphone of an external electronic device (e.g., an electronic device  102 ) directly (e.g., wiredly) or wirelessly coupled with the electronic device  101 . 
     The sensor module  176  may detect an operational state (e.g., power or temperature) of the electronic device  101  or an environmental state (e.g., a state of a user) external to the electronic device  101 , and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module  176  may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     The interface  177  may support one or more specified protocols to be used for the electronic device  101  to be coupled with the external electronic device (e.g., the electronic device  102 ) directly (e.g., wiredly) or wirelessly. According to an embodiment, the interface  177  may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface. 
     A connecting terminal  178  may include a connector via which the electronic device  101  may be physically connected with the external electronic device (e.g., the electronic device  102 ). According to an embodiment, the connecting terminal  178  may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector). 
     The haptic module  179  may convert an electrical signal into a mechanical stimulus (e.g., a vibration or motion) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module  179  may include, for example, a motor, a piezoelectric element, or an electric stimulator. 
     The camera module  180  may capture a still image or moving images. According to an embodiment, the camera module  180  may include one or more lenses, image sensors, image signal processors, or flashes. 
     The power management module  188  may manage power supplied to the electronic device  101 . According to one embodiment, the power management module  188  may be implemented as at least part of, for example, a power management integrated circuit (PMIC). 
     The battery  189  may supply power to at least one component of the electronic device  101 . According to an embodiment, the battery  189  may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. 
     The communication module  190  may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device  101  and the external electronic device (e.g., the electronic device  102 , the electronic device  104 , or the server  108 ) and performing communication via the established communication channel. The communication module  190  may include one or more communication processors that are operable independently from the processor  120  (e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an embodiment, the communication module  190  may include a wireless communication module  192  (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module  194  (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device via a first network  198  (e.g., a short-range communication network, such as Bluetooth™, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or a second network  199  (e.g., a long-range communication network, such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., local area network (LAN) or wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module  192  may identify or authenticate the electronic device  101  in a communication network, such as the first network  198  or the second network  199 , using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module  196 . 
     The wireless communication module  192  may support a 5G network, after a 4G network, and next-generation communication technology, e.g., new radio (NR) access technology. The NR access technology may support enhanced mobile broadband (eMBB), massive machine type communications (mMTC), or ultra-reliable and low-latency communications (URLLC). The wireless communication module  192  may support a high-frequency band (e.g., the mmWave band) to achieve, e.g., a high data transmission rate. The wireless communication module  192  may support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module  192  may support various requirements specified in the electronic device  101 , an external electronic device (e.g., the electronic device  104 ), or a network system (e.g., the second network  199 ). According to an embodiment, the wireless communication module  192  may support a peak data rate (e.g., 20 Gbps or more) for implementing eMBB, loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of downlink (DL) and uplink (UL), or a round trip of 1 ms or less) for implementing URLLC. 
     The antenna module  197  may transmit or receive a signal or power to or from the outside (e.g., the external electronic device). According to an embodiment, the antenna module may include an antenna including a radiator formed of a conductor or conductive pattern formed on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module  197  may include a plurality of antennas (e.g., an antenna array). In this case, at least one antenna appropriate for a communication scheme used in a communication network, such as the first network  198  or the second network  199 , may be selected from the plurality of antennas by, e.g., the communication module  190 . The signal or the power may then be transmitted or received between the communication module  190  and the external electronic device via the selected at least one antenna. According to an embodiment, other parts (e.g., radio frequency integrated circuit (RFIC)) than the radiator may be further formed as part of the antenna module  197 . 
     According to various embodiments, the antenna module  197  may form a mmWave antenna module. According to an embodiment, the mmWave antenna module may include a printed circuit board, a RFIC disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a designated high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the designated high-frequency band. 
     At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)). 
     According to an embodiment, commands or data may be transmitted or received between the electronic device  101  and the external electronic device  104  via the server  108  coupled with the second network  199 . The external electronic devices  102  or  104  each may be a device of the same or a different type from the electronic device  101 . According to an embodiment, all or some of operations to be executed at the electronic device  101  may be executed at one or more of the external electronic devices  102 ,  104 , or  108 . For example, if the electronic device  101  should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device  101 , instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device  101 . The electronic device  101  may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device  101  may provide ultra low-latency services using, e.g., distributed computing or mobile edge computing. In another embodiment, the external electronic device  104  may include an Internet-of-things (IoT) device. The server  108  may be an intelligent server using machine learning and/or a neural network. According to an embodiment, the external electronic device  104  or the server  108  may be included in the second network  199 . The electronic device  101  may be applied to intelligent services (e.g., smart home, smart city, smart car, or health-care) based on 5G communication technology or IoT-related technology. 
     The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above. 
     It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C,” may include all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element. 
     As used herein, the term “module” may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC). 
     According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities. Some of the plurality of entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added. 
       FIG.  2    is a front perspective view illustrating an electronic device according to various embodiments.  FIG.  3    is a rear perspective view illustrating an electronic device according to various embodiments. 
     Referring to  FIGS.  2  and  3   , according to an embodiment, an electronic device  200  may include a housing  210  with a front surface  210 A, a rear surface  210 B, and a side surface  210 C surrounding a space between the front surface  210 A and the rear surface  210 B. According to another embodiment, the housing  210  may denote a structure forming part of the front surface  210 A, the rear surface  210 B, and the side surface  210 C of  FIG.  2   . According to an embodiment, at least part of the front surface  210 A may have a substantially transparent front plate  202  (e.g., a glass plate or polymer plate including various coat layers). The rear surface  210 B may be formed by a rear plate  211 . The rear plate  211  may be formed of, e.g., glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two thereof. The side surface  210 C may be formed by a side bezel structure (or a “side member”)  218  that couples to the front plate  202  and the rear plate  211  and includes a metal and/or polymer. According to an embodiment, the rear plate  211  and the side bezel plate  218  may be integrally formed together and include the same material (e.g., glass, metal, such as aluminum, or ceramic). According to another embodiment, the front surface  210 A and/or the front plate  202  may include a part of the display  220 . 
     According to an embodiment, the electronic device  200  may include at least one of a display  220 , audio modules  203 ,  207 , and  214  (e.g., the audio module  170  of  FIG.  1   ), a sensor module (e.g., the sensor module of  FIG.  1   ).  176 ), camera modules  205  and  206  (e.g., the camera module  180  of  FIG.  1   ), a key input device  217  (e.g., the input module  150  of  FIG.  1   ), and connector holes  208  and  209  (e.g., the connection terminal  178  of  FIG.  1   ). According to an embodiment, the electronic device  200  may exclude at least one (e.g., the connector hole  209 ) of the components or may add other components. According to an embodiment, the display  220  may be visually revealed through, e.g., a majority portion of the front plate  202 . 
     According to an embodiment, the surface (or the front plate  202 ) of the housing  210  may include a screen display area formed as the display  220  being visually exposed. For example, the screen display area may include the front surface  210 A. 
     According to another embodiment, the electronic device  200  may include a recess or opening formed in a portion of the screen display area (e.g., the front surface  210 A) of the display  220  and may include at least one or more of an audio module  214 , a sensor module, a light emitting device, and a camera module  205  aligned with the recess or opening. According to another embodiment, at least one or more of the audio module  214 , sensor module, camera module  205 , fingerprint sensor, and light emitting device may be included on the rear surface of the screen display area of the display  220 . 
     According to an embodiment, the display  220  may be disposed to be coupled with, or adjacent, a touch detecting circuit, a pressure sensor capable of measuring the strength (pressure) of touches, and/or a digitizer for detecting a magnetic field-type stylus pen. 
     In some embodiments, at least a portion of the key input device  217  may be disposed on the side bezel structure  218 . 
     According to an embodiment, the audio modules  203 ,  207 , and  214  may include, e.g., a microphone hole  203  and speaker holes  207  and  214 . The microphone hole  203  may have a microphone inside to obtain external sounds. According to an embodiment, there may be a plurality of microphones to be able to detect the direction of a sound. The speaker holes  207  and  214  may include an external speaker hole  207  and a phone receiver hole  214 . According to an embodiment, the speaker holes  207  and  214  and the microphone hole  203  may be implemented as a single hole, or speakers may be included without the speaker holes  207  and  214  (e.g., piezo speakers). 
     According to an embodiment, the sensor modules may generate an electrical signal or data value corresponding to an internal operating state or external environmental state of the electronic device  200 . The sensor module may include, e.g., a first sensor module (e.g., a proximity sensor) and/or a second sensor module (e.g., a fingerprint sensor) disposed on the front surface  210 A of the housing  210 . The sensor module may include a third sensor module (e.g., an HRM sensor) and/or a fourth sensor module (e.g., a fingerprint sensor) disposed on the rear surface  210 B of the housing  210 ). In an embodiment, the fingerprint sensor may be disposed on the rear surface  210 B as well as on the front surface  210 A (e.g., the display  220 ) of the housing  210 . The electronic device  200  may further include sensor modules, e.g., at least one of a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     According to an embodiment, the camera modules  205  and  206  may include a front camera module  205  disposed on the first surface  210 A of the electronic device  200  and a rear camera module  206  and/or a flash  204  disposed on the rear surface  210 B. The camera modules  205  and  206  may include one or more lenses, an image sensor, and/or an image signal processor. The flash  204  may include, e.g., a light emitting diode (LED) or a xenon lamp. According to an embodiment, two or more lenses (an infrared (IR) camera, a wide-angle lens, and a telephoto lens) and image sensors may be disposed on one surface of the electronic device  200 . 
     According to an embodiment, the key input device  217  may be disposed on the side surface  210 C of the housing  210 . According to an embodiment, the electronic device  200  may exclude all or some of the above-mentioned key input devices  217  and the excluded key input devices  217  may be implemented in other forms, e.g., as soft keys, on the display  220 . 
     According to an embodiment, the light emitting device may be disposed on, e.g., the front surface  210 A of the housing  210 . The light emitting device may provide, e.g., information about the state of the electronic device  200  in the form of light. According to another embodiment, the light emitting device may provide a light source that interacts with, e.g., the front camera module  205 . The light emitting device may include, e.g., a light emitting diode (LED), an infrared (IR) LED, and/or a xenon lamp. 
     According to an embodiment, the connector holes  208  and  209  may include a first connector hole  208  configured to receive a connector (e.g., an earphone jack) configured to transmit/receive audio signals to/from an external electronic device or a connector (e.g., a USB connector) configured to transmit/receive power and/or data to/from the external electronic device and/or a second connector hole  209  for receiving a storage device (e.g., a subscriber identification module (SIM) card). According to an embodiment, the first connector hole  208  and/or the second connector hole  209  may be omitted. 
       FIG.  4    is an exploded perspective view illustrating an electronic device according to various embodiments. 
     Referring to  FIG.  4   , an electronic device  200  (e.g., the electronic device  200  of  FIGS.  2  and  3   ) may include at least one of a front plate  220  (e.g., the front plate  202 ), a display  230  (e.g., the display  201  of  FIG.  2   ), a first supporting member  232  (e.g., a bracket), a printed circuit board  240 , a battery  250 , a second supporting member  260  (e.g., a rear case), an antenna  270 , and a rear plate  280  (e.g., the rear plate  211  of  FIG.  3   ). According to an embodiment, the electronic device  200  may exclude at least one (e.g., the first supporting member  232  or the second supporting member  260 ) of the components or may add other components. At least one of the components of the electronic device  200  may be the same or similar to at least one of the components of the electronic device  200  of  FIG.  2  or  3    and no duplicate description is made below. 
     According to an embodiment, the first supporting member  232  may be disposed inside the electronic device  200  to be connected with the side bezel structure  231  or integrated with the side bezel structure  231 . The first supporting member  232  may be formed of, e.g., a metallic material and/or non-metallic material (e.g., polymer). The display  230  may be disposed on and joined (connected) onto one surface of the first supporting member  232 , and the printed circuit board  240  may be disposed on and joined (connected) onto the opposite surface of the first supporting member  311 . A processor, memory, and/or interface may be mounted on the printed circuit board  240 . The processor may include one or more of, e.g., a central processing unit, an application processor, a graphic processing device, an image signal processing, a sensor hub processor, or a communication processor. According to an embodiment, the memory may include, e.g., a volatile or non-volatile memory. According to an embodiment, the interface may include, e.g., a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, and/or an audio interface. The interface may electrically or physically connect, e.g., the electronic device  200  with an external electronic device and may include a USB connector, an SD card/multimedia card (MMC) connector, or an audio connector. According to an embodiment, the battery  250  (e.g., the battery  189  of  FIG.  1   ) may be a device for supplying power to at least one component (e.g., the camera module  212 ) of the electronic device  200 . The battery  189  may include, e.g., a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. At least a portion of the battery  250  may be disposed on substantially the same plane as the printed circuit board  240 . The battery  250  may be integrally or detachably disposed inside the electronic device  200 . 
     According to various embodiments, the second supporting member  260  (e.g., a rear case) may be disposed between the printed circuit board  240  and the antenna  270 . For example, the second supporting member  260  may include one surface to which at least one of the printed circuit board  240  and the battery  250  is disposed on and coupled (connected), and another surface to which the antenna  270  is disposed on and coupled (connected). 
     According to an embodiment, the antenna  270  may be disposed between the rear plate  280  and the battery  250 . The antenna  270  may include, e.g., a near-field communication (NFC) antenna, a wireless charging antenna, and/or a magnetic secure transmission (MST) antenna. The antenna  270  may perform short-range communication with, e.g., an external device or may wirelessly transmit or receive power necessary for charging. For example, the antenna  270  may include a coil for wireless charging. According to an embodiment, an antenna structure may be formed by a portion or combination of the side bezel structure  231  and/or the first supporting member  232 . 
     According to various embodiments, the electronic device  200  may include a camera module (e.g., the camera module  206  of  FIG.  3   ) disposed in the housing (e.g., the housing  210  of  FIG.  2   ). According to an embodiment, the camera module  206  may be disposed on the first supporting member  232  and may be a rear camera module (e.g., the camera module  212  of  FIG.  3   ) configured to obtain an image of a subject positioned behind (e.g., the +Z direction) of the electronic device  200 . According to an embodiment, at least a portion of the camera module  212  may be exposed to the outside of the electronic device  200  through the opening  282  formed in the rear plate  280 . 
     The electronic device  200  disclosed in  FIGS.  2  to  4    has a bar-type or plate-type appearance, but embodiments are not limited thereto. For example, the illustrated electronic device may be a rollable electronic device or a foldable electronic device. A rollable electronic device may be an electronic device at least a portion of which may be wound or rolled or received in a housing (e.g., the housing  210  of  FIG.  2   ) as the display (e.g., the display  230  of  FIG.  4   ) may be bent and deformed. As the display is stretched out or is exposed to the outside in a larger area according to the user&#39;s need, the rollable electronic device may use an expanded second display area. A foldable electronic device may be an electronic device that may be folded in directions to face two different areas of the display or in directions opposite to each other. In general, in the portable state, the foldable electronic device may be folded so that the two different areas of the display face each other and, in an actual use state, the user may unfold the display so that the two different areas form a substantially flat shape. According to various embodiments, the electronic device  200  may include various electronic devices, such as a laptop computer or a camera, as well as a portable electronic device, such as a smart phone. 
       FIG.  5    is a view illustrating an implementation example of a battery according to various embodiments.  FIG.  6    is a perspective view illustrating an electrode configuration of a battery according to various embodiments.  FIG.  7    is a front view illustrating a battery according to various embodiments.  FIG.  8    is a top view illustrating a battery according to various embodiments. 
     Referring to  FIGS.  5  to  8   , a battery  300  may include a case  301  and an electrode assembly  310  disposed in the case  301 . 
     According to various embodiments, the battery  300  may supply power to at least one component of various electronic devices (e.g., the electronic device  101  of  FIG.  1   ). For example, the electronic device may include a mobile device (e.g., a smart phone), a wearable device, a laptop computer, and/or a portable wireless charger. Moreover, the battery  300  may be mounted in various electronic devices requiring power supply. According to an embodiment, the battery  300  may be a rechargeable secondary battery. According to an embodiment, the battery  300  may be a jelly roll battery that may be disposed in an electronic device (e.g., a mobile phone). 
     According to various embodiments, the case  301  may form the exterior of the battery  300  and may provide a space configured to receive the electrode assembly  310 . According to an embodiment, the case  301  may include a pouch or a can structure encapsulating the electrode assembly  310 . According to an embodiment, the case  301  may be bendable. For example, the case  301  may be formed of a flexible material. According to an embodiment, the case  301  may include at least one terminal  302  to be electrically connected to an external electronic device. 
     According to various embodiments, the battery  300  may include an electrode assembly  310 , an electrode tab  320 , and/or a protection member  330 . 
     According to various embodiments, the electrode assembly  310  may include a positive electrode  311 , a negative electrode  313 , and a separator  315 . For example, the electrode assembly  310  may be at least one unit cell that includes the positive electrode  311 , the negative electrode  313 , and at least one separator  315  for preventing contact between the positive electrode  311  and the negative electrode  313 . According to an embodiment, the electrode assembly  310  may be disposed in the case  301 . 
     According to an embodiment, the electrode assembly  310  may be formed in a wound roll shape. For example, the electrode assembly  310  may be a jelly roll battery. According to an embodiment, the electrode assembly  310  may include a first surface  310   a  facing in a first direction (e.g., +Z direction) and a second surface  310   b  facing in a second direction (e.g., −Z direction). For example, the electrode assembly  310  may include the first surface  310   a , the second surface  310   b , and a third surface  310   c  extending from the first surface  310   a  to the second surface  310   b . The second surface  310   b  may be opposite to the first surface  310   a . According to an embodiment, the first surface  310   a , the second surface  310   b , and the third surface  310   c  may be formed by one of the positive electrode  311 , the negative electrode  313 , or the separator  315 . 
     According to an embodiment, the electrode assembly  310  may be a stack type battery. For example, the electrode assembly  310  may include a plurality of positive electrodes  311 , a plurality of negative electrodes  313 , and a plurality of separators  315  that are alternately stacked. 
     According to various embodiments, the electrode tab  320  may be connected to the electrode assembly  310 . For example, the electrode tab  320  may be connected to the positive electrode  311  or the negative electrode  313  of the electrode assembly  310 . According to an embodiment, the electrode tab  320  may include a path for transferring the electric power stored in the electrode assembly  310  to the outside of the electrode assembly  310 . According to an embodiment, at least a portion of the electrode tab  320  may protrude to the outside of the electrode assembly  310 , supplying power to a component of the electronic device (e.g., the electronic device  200  of  FIG.  2   ).
         According to various embodiments, the electrode tab  320  may include a positive electrode tab  321  electrically connected to the positive electrode  311  and a negative electrode tab  323  electrically connected to the negative electrode  313 . According to an embodiment, the positive electrode tab  321  may be connected to a positive electrode substrate (e.g., the positive electrode substrate  311   a  of  FIG.  7   ) of the positive electrode  311 , and the negative electrode tab  323  may be connected to a negative electrode substrate (e.g., the negative electrode substrate  313   a  of  FIG.  7   ) of the negative electrode  313 .   According to another embodiment, the positive electrode tab  321  may be connected to the positive electrode substrate  311   a  at a plurality of points, and the negative electrode tab  323  may be connected to the negative electrode substrate  313   a  at a plurality of points.       

     According to various embodiments, the electrode tab  320  may include protrusion areas  325   a  and  325   b  exposed to the outside of the electrode assembly  310 . According to an embodiment, the protrusion areas  325   a  and  325   b  may include a junction area where the electrode tab  320  is welded to the electrode assembly  310 . For example, the positive electrode tab  321  may be connected to the positive electrode  311  by the positive electrode protrusion area  325   a , and the negative electrode tab  323  may be connected to the negative electrode  313  by the negative electrode protrusion area  325   b . For example, the positive electrode protrusion area  325   a  may be a portion of the positive electrode tab  321  extending from a junction electrically connected to the positive electrode  311  in the electrode assembly  310 , and the negative electrode protrusion area  325   b  may be a portion of the negative electrode tab  323  extending from a junction electrically connected to the negative electrode  313  in the electrode assembly  310 . According to an embodiment, the electrode tab  320  may be positioned substantially at the center of the electrode assembly  310 . 
     According to various embodiments, the electrode tab  320  may include electrode tab surfaces  321   a ,  321   b ,  323   a , and  323   b  that are substantially parallel to the first surface  310   a  or the second surface  310   b  of the electrode assembly  310 . For example, the electrode tab  320  has an upper surface  320   a  (e.g., a first positive electrode tab surface  321   a  and a first negative electrode tab surface  323   a ) facing in the same direction (e.g., a first direction (+Z direction)) as the first surface  310   a  and a lower surface  320   b  (e.g., a second positive electrode tab surface  321   b  and a second electrode tab surface  323   b ) facing in the same (e.g., a second direction (−Z direction)) as the second surface  310   b . According to an embodiment, the positive electrode tab  321  may include the first positive electrode tab surface  321   a , the second positive electrode tab surface  321   b  opposite to the first positive electrode tab surface  321   a , and a third positive electrode tab surface  321   c  surrounding and disposed adjacent to at least a portion between the first positive electrode tab surface  321   a  and the second positive electrode tab surface  321   b . The negative electrode tab  323  may include the first negative electrode tab surface  323   a , the second negative electrode tab surface  323   b  opposite to the first negative electrode tab surface  323   a , and a third negative electrode tab surface  323   c  surrounding and disposed adjacent to at least a portion between the first negative electrode tab surface  323   a  and the second negative electrode tab surface  323   b.    
     According to various embodiments, the protection member  330  may reduce or prevent a short circuit of the battery  300 . For example, the protection member  330  may reduce or prevent the contact between the positive electrode tab  321  and the negative electrode  313  and/or the contact between the negative electrode tab  323  and the positive electrode  311 . According to an embodiment, at least a portion of the protection member  330  may be disposed on the protrusion areas  325   a  and  325   b  of the electrode tab  320 . For example, the protection member  330  may be attached so that the electrode tab  320  is provided adjacent to and surrounds the protruding portion of the electrode assembly  310 . 
     According to various embodiments, the protection member  330  may reduce or prevent deformation of the electrode assembly  310 . According to an embodiment, the protection member  330  may reduce expansion of the electrode assembly  310  when swelling occurs in the electrode assembly  310 . For example, according to an embodiment, the protection member  330  may be attached to be disposed adjacent to and surround at least a portion of the outer surface of the electrode assembly  310 . The protection member  330  may extend from the first surface  310   a  through the protrusion areas  325   a  and  325   b  to the second surface  310   b , reducing shape deformation of the electrode assembly  310 . According to an embodiment, the protection member  330  may be disposed on and cover a portion of the positive electrode  311 , the negative electrode  313 , and the separator  315 . According to an embodiment, the protection member  330  may include anti-deformation tape. According to an embodiment, the protection member  330  may include polyethylene terephthalate (PET) or polyimide. For example, the protection member  330  may be a protection tape. As another example, the protection member  330  may be formed of a liquid, solid, or semi-solid material. 
     According to various embodiments, the protection member  330  may be disposed on the positive electrode tab  321  and the negative electrode tab  323 . According to an embodiment, the protection member  330  may include a first protection member  331  surrounding and disposed adjacent to at least a portion of the positive electrode tab  321  and a second protection member  333  surrounding and disposed adjacent to at least a portion of the negative electrode tab  323 . According to an embodiment, the first protection member  331  may include a first portion  331 - 1  attached on the first surface  310   a  and a second portion  331 - 2  attached on the second surface  310   b . According to an embodiment, the first protection member  331  may include a first cover area  331   a  disposed on the first positive electrode tab surface  321   a  and a second cover area  331   b  disposed on the second positive electrode tab surface  321   b . According to an embodiment, the second protection member  333  may include a third portion  333 - 1  attached on the first surface  310   a  and a fourth portion  333 - 2  attached on the second surface  310   b . According to an embodiment, the second protection member  333  may include a third cover area  333   a  disposed on the first negative electrode tab surface  323   a  and a fourth cover area  333   b  disposed on the second negative electrode tab surface  323   b . According to an embodiment, the side surfaces (e.g., the third positive electrode tab surface  321   c  and the third negative electrode tab surface  323   c ) of the electrode tab  320  are not covered by the protection member  330  but may be exposed to the outside of the electrode assembly  310 . 
     According to various embodiments, at least a portion of the protection member  330  may extend from the electrode assembly surfaces  310   a  and  310   b  to the electrode tab surfaces  321   a ,  321   b ,  323   a , and  323   b  through the protrusion areas  325   a  and  325   b . According to an embodiment, the first area  334  of the protection member  330  may extend from the first surface  310   a  to the upper surface  320   a  through the protrusion areas  325   a  and  325   b , and the second area  336  of the protection member  330  may extend from the second surface  310   b  to the lower surface  320   b  through the protrusion areas  325   a  and  325   b . For example, the first area  334  of the first protection member  331  may extend from the first surface  310   a  through the positive electrode protrusion area  325   a  to the first positive electrode tab surface  321   a , and the second area  336  of the first protection member  331  may extend from the second surface  310   b  through the positive electrode protrusion area  325   a  to the second positive electrode tab surface  321   b . A portion of the second protection member  333  may extend from the first surface  310   a  through the negative electrode protrusion area  325   b  to the first negative electrode tab surface  323   a , and another portion of the second protection member  333  may extend from the second surface  310   b  to the second negative electrode tab surface  323   b  through the negative electrode protrusion area  325   b . According to an embodiment, the protection member  330  may extend from the first surface  310   a  through the positive electrode  311 , the negative electrode  313 , and the separator  315  to the second surface  310   b  of the electrode assembly  310 . According to an embodiment, one electrode tab (e.g., positive electrode tab  321  or negative electrode tab  323 ) may pass through a portion (e.g., first protection member  331  or second protection member  333 ) of one protection member  330 . For example, the positive electrode tab  321  may pass through the first protection member  331 , and the negative electrode tab  323  may pass through the second protection member  333 . According to an embodiment, a plurality of (e.g., two) electrode tabs  320  (e.g., positive electrode tab  321  and negative electrode tab  323 ) may pass through a portion of one protection member  330 . According to an embodiment, each of the first protection member  331  and the second protection member  333  may be a tape. According to an embodiment, the first protection member  331  and/or the second protection member  333  may include a plurality of tapes. For example, the first area  334 , the second area  336 , the first cover area  331   a , and the second cover area  331   b  of the first protection member  331  each may be separate tapes, and the first area  334 - 1 , the second area  336 - 1 , the third cover area  333   a , and the fourth cover area  333   b  of the second protection member  333  each may be separate tapes. 
       FIG.  9    is a view illustrating an electrode assembly according to various embodiments. 
     Referring to  FIG.  9   , an electrode assembly  310  may include a positive electrode  311 , a negative electrode  313 , and a separator  315 . The configuration of the positive electrode  311 , the negative electrode  313 , and the separator  315  of  FIG.  9    may be identical in whole or part to the configuration of the positive electrode  311 , the negative electrode  313 , and the separator  315  of  FIGS.  5  to  8   . 
     According to various embodiments, the positive electrode  311  may include a positive electrode substrate  311   a  and a positive electrode mixture  311   b  disposed on the positive electrode substrate  311   a . According to an embodiment, the positive electrode substrate  311   a  may include aluminum (Al). According to an embodiment, the positive electrode mixture  311   b  may include lithium (Li) oxide including a transition metal (e.g., at least one of cobalt (Co), manganese (Mn), or iron (Fe)). According to an embodiment, the positive electrode mixture  311   b  may be disposed adjacent to and surround at least a portion of the positive electrode substrate  311   a . For example, the positive electrode substrate  311   a  may be disposed between a pair of positive electrode mixtures  311   b.    
     According to various embodiments, the negative electrode  313  may include a negative electrode substrate  313   a  and a negative electrode mixture  313   b . According to an embodiment, the negative electrode substrate  313   a  may include nickel (Ni) and/or copper (Cu). According to an embodiment, the negative electrode mixture  313   b  may include graphite and/or lithium (Li) titanium (Ti) oxide. According to an embodiment, the negative electrode mixture  313   b  may surround at least a portion of the negative electrode substrate  313   a . For example, the negative electrode substrate  313   a  may be disposed between a pair of negative electrode mixtures  313   b.    
     According to various embodiments, the separator  315  may physically separate the positive electrode  311  and the negative electrode  313 . The separator  326  may be a non-conductive porous body with pores configured to transport a designated material (e.g., lithium (Li) ions). According to an embodiment, the separator  315  may be a synthetic resin (e.g., polyethylene or polypropylene). According to an embodiment, the electrode assembly  310  may include a plurality of separators  315 . For example, some of the plurality of separators  315  may be disposed between the positive electrode  311  and the negative electrode  313 , and others may be disposed on the positive electrode  311  or the negative electrode  313 . 
     According to various embodiments, the electrode assembly  310  may include an ion barrier structure (e.g., the ion barrier structure  400  of  FIG.  10   ). According to various embodiments, the ion barrier structure (e.g., the ion barrier structure  400  of  FIG.  10   ) may include the positive electrode  311 , the negative electrode  313 , the separator  315 , an ion barrier (e.g., the ion barrier  430  of  FIG.  10   ), and/or an insulation layer (e.g., the insulation layer  440  of  FIG.  12   ) and may be provided by an arrangement relationship or a combination thereof. The ion barrier structure (e.g., the ion barrier structure  400  of  FIG.  10   ) may control the transfer path of cations transferred from the positive electrode  311  to the negative electrode  313  and may contribute to an increase in the capacity of the battery  300 . 
     The ion barrier structure is described below with reference to various enlarged views (e.g.,  FIGS.  10  to  16   ) of a partial area  399  of the electrode assembly  310 . 
       FIG.  10    is a view illustrating an ion barrier structure according to various embodiments.  FIG.  11    is a view illustrating an ion movement in an ion barrier structure according to various embodiments.  FIG.  12    is a view illustrating an ion barrier structure including an insulation layer according to various embodiments. 
     Referring to  FIGS.  10  and  11   , an ion barrier structure  400  may include a separator  415 , a positive electrode  411  and a negative electrode  413  disposed to face each other with the separator  415  interposed therebetween, and the positive electrode  411  may include an ion barrier  430 . For example, the positive electrode  411  may include a positive electrode substrate  411   a  and a positive electrode mixture  411   b  disposed on the positive electrode substrate  411   a . The negative electrode  413  may include a negative electrode substrate  413   a  and a negative electrode mixture  413   b  disposed on the negative electrode substrate  413   a . The separator  415  may be disposed between the positive electrode mixture  411   b  and the negative electrode mixture  413   b.    
     The description of the positive electrode  311 , the positive electrode substrate  311   a , the positive electrode mixture  311   b , the negative electrode  313 , the negative electrode substrate  313   a , the negative electrode mixture  313   b , and the separator  315  in the above-described embodiments may be applied to the description of the positive electrode  411 , the positive electrode substrate  411   a , the positive electrode mixture  411   b , the negative electrode  413 , the negative electrode substrate  411   a , the negative electrode mixture  411   b , and the separator  415  of  FIGS.  10  and  11   . 
     According to various embodiments, the positive electrode mixture  411   b  may include a barrier receiving area  420 . According to an embodiment, the barrier receiving area  420  may be formed by etching a portion of the positive electrode mixture  411   b . For example, the barrier receiving area  420  may be formed near an edge of the positive electrode mixture  411   b . According to an embodiment, the barrier receiving area  420  may include a first receiving area  420   a  and a second receiving area  420   b . For example, the first receiving area  420   a  may be an area in which a portion of the edge of the front surface (e.g., the surface facing the separator  415 ) of the positive electrode mixture  411   b  has been etched, and the second receiving area  420   b  may be an area in which a portion of the side edge of the positive electrode mixture  411   b  has been etched. 
     According to various embodiments, the ion barrier  430  may be disposed on at least a portion of the positive electrode mixture  411   b . According to an embodiment, the ion barrier  430  may be positioned in the barrier receiving area  420 . For example, the ion barrier  430  may be deposited by atomic layer deposition, chemical layer deposition, and/or physical vapor deposition. 
     According to various embodiments, the ion barrier  430  may include a first barrier area  430   a  and a second barrier area  430   b . For example, the first barrier area  430   a  may be a portion of the ion barrier  430  disposed in the first receiving area  420   a , and the second barrier area  430   b  may be a portion of the ion barrier  430  disposed in the second receiving area  420   b . As another example, the first barrier area  430   a  may be a partial area of the ion barrier  430  disposed on the upper portion (e.g., in the +Z-axis direction) of the positive electrode mixture  411   b , and the second barrier area  430   b  may be a portion of the ion barrier  430  disposed to face the side surface (e.g., −X-axis direction) of the positive electrode mixture  411   b.    
     According to various embodiments, the ion barrier  430  may be formed of a material for preventing the permeation of ions. According to an embodiment, the ion barrier  430  may be a metal nitride For example, the ion barrier  430  may include titanium nitride (TiN), titanium aluminum nitride (TiAlN), chromium nitride (CrN), zirconium nitride (ZrN), or titanium chromium-nitride (TiCrN). According to another embodiment, the ion barrier  430  may be formed of a polymer material. 
     According to various embodiments (refer to  FIG.  11   ), the ion barrier  430  may induce the cations  429   a  and  429   b  to be transferred to the negative electrode  413  through a predetermined area of the positive electrode mixture  411   b . According to an embodiment, the ion barrier  430  may induce the cations  429   a  stored in the side area A 2  of the positive electrode mixture  411   b  to be transferred to the negative electrode  413  through a transfer surface  423  formed in a center area A 1  of the positive electrode mixture  411   b . For example, the positive ions  429   a  stored in the side area A 2  may be prevented from being transferred to the negative electrode  413  through the area in which the first barrier area  430   a  and the second barrier area  430   b  are positioned and be moved to the negative electrode  413  through the center area A 1  and the transfer surface  423 . For example, the defined area may include the transfer surface  423 . 
     According to various embodiments, the ion barrier structure  400  including the ion barrier  430  may have an additional ion storage area (e.g., the side area A 2 ). For example, in the absence of the ion barrier  430 , the positive electrode mixture  411   b  may be formed shorter than the length of the negative electrode mixture  413   b  to prevent ion dendrites at the negative electrode  413  (e.g., the positive electrode mixture  411   b  area having a first length  11 ). According to an embodiment, the ion barrier  430  prevents the ions  429   a  stored in the additional storage area A 2  from moving through the area where the first barrier area  430   a  and the second barrier area  430   b  are positioned so that a storage area A 2  having a second length  12  in addition to the center area A 1  having the first length  11  may be formed in the positive electrode mixture  411   b . According to an embodiment, the ion barrier  430  may be formed on only one side of the positive electrode mixture  411   b , or two opposite sides thereof. Thus, the positive electrode mixture  411   b  may have a width that is as long as a third length  13  which is the sum of the first length  11  corresponding to the center area A 2  and the second length  12  corresponding to the storage area A 2  formed on the two opposite sides. According to an embodiment, the third length  13  may correspond to the width of the negative electrode mixture (e.g., the negative electrode mixture  413   b  of  FIG.  9   ). For example, the third length  13  may be substantially equal to or longer than the width of the negative electrode mixture (e.g., the negative electrode mixture  413   b  of  FIG.  9   ). According to an embodiment, the first length  11  and the second length  12  may have a predetermined ratio. For example, the second length  12  may correspond to about 5% to about 10% of the first length  11 . 
       FIG.  12    is a view illustrating an ion barrier structure including an insulation layer. 
     Referring to  FIG.  12   , the ion barrier structure  400  may include an insulation layer  440 . According to various embodiments, the insulation layer  440  may increase the electrical resistance of the positive electrode  411  and may suppress the movement of electrons from the positive electrode  411  to the negative electrode  413 . For example, the insulation layer  440  may enhance the insulation of the edge area of the positive electrode  411  and prevent the occurrence of a short circuit by an external impact or an internal foreign object. The ion barrier structure  400  of  FIG.  12    may be identical in whole or part to the ion barrier structure  400  of  FIGS.  10  and  11   . 
     According to various embodiments, the insulation layer  440  may be disposed adjacent to the ion barrier  430 . For example, the insulation layer  440  may be disposed adjacent to and to surround at least a portion of the ion barrier  430  or may be disposed between the ion barrier  430  and the positive electrode mixture  411   b . According to an embodiment, the insulation layer  440  may include a first insulation portion  440   a  and a second insulation portion  440   b . For example, the first insulation portion  440   a  may mean a portion of the insulation layer  440  corresponding to the first barrier area  430   a . For example, the first insulation portion  440   a  may mean a portion of the insulation layer  440  disposed on the upper portion (e.g., in the +Z-axis direction) of the first barrier area  430   a . According to another embodiment, the first insulation portion  440   a  may also be a portion of the insulation layer  440  facing the separator  415 . The second insulation portion  440   b  may be a portion of the insulation layer  440  corresponding to the second barrier area  430   b . For example, the second insulation portion  440   b  may be a portion of the insulation layer  440  disposed on a side surface (e.g., −X-axis direction) of the second barrier area  430   b . According to another embodiment, the second insulation portion  440   b  may be a portion of the insulation layer  440  facing the side surface (e.g., −X-axis direction). The insulation layer  440  may perform an additional insulation function of the ion barrier structure  400 .  FIG.  12    illustrates that the insulation layer  440  is disposed adjacent to and to surround at least a portion of the ion barrier  430 , but embodiments are not limited thereto, and, the insulation layer  440  may also be disposed between the ion barrier  430  and the positive electrode mixture  411   b  as in embodiments to be described below. 
     According to various embodiments, the barrier receiving area  420  may be formed considering the thickness of the ion barrier  430  and/or the insulation layer  440 . According to an embodiment, the thickness of the first receiving area  420   a  may be formed such that the ion first barrier area  420   a  and/or the first insulation portion  440   a  disposed in the first receiving area  420   a  corresponds to the transfer surface  423 . As another example, the thickness of the second receiving area  420   b  may be formed that the second barrier area  420   b  and/or the second insulation portion  440   b  disposed in the second receiving area  420   b  does not protrude further than the separation film  415 . However, embodiments are not limited thereto, and at least a portion of the ion barrier  430  and/or the insulation layer  440  may be disposed to protrude (e.g., protrude in the +Z-axis direction) further than the transfer surface  423 . According to an embodiment, the first length  11  and the second length  12  may have a predetermined ratio. For example, the second length  12  may correspond to about 5% to about 10% of the first length  11 . 
       FIGS.  13  to  16    are views illustrating a process for manufacturing an ion battery structure according to a first embodiment.  FIG.  13    is a view illustrating a process for manufacturing an ion barrier structure according to a first embodiment.  FIG.  14    is a view illustrating a process for manufacturing an ion barrier structure according to a second embodiment.  FIG.  15    is a view illustrating a process for manufacturing an ion barrier structure according to a third embodiment.  FIG.  16    is a view illustrating a process for manufacturing an ion barrier structure according to a fourth embodiment. 
     Referring to  FIG.  13   , the ion barrier  540  and/or the insulation layer  550  may be disposed on the edge area  516  of the positive electrode mixture  511   b . For example, the positive electrode mixture  511   b  may not include a separate barrier receiving area (e.g., the barrier receiving area  430  of  FIGS.  10  and  11   ), and the ion barrier  540  and/or the insulation layer  550  may be disposed adjacent to and to surround the edge area  516  of the positive electrode mixture  511   b . The description of the positive electrode  411  according to the above-described embodiments may be applied to the positive electrode  511  of  FIG.  13   . 
     According to various embodiments (referring to b-1), the ion barrier  540  may be disposed adjacent to and to surround the edge area  515   a  of the upper surface (surface in the +Z-axis direction) of the positive electrode mixture  511   b  and the edge area  515  of the side surface (surface in the −X-axis direction) connected with the upper edge area  515   a . For example, the first barrier area  540   a  of the ion barrier  540  may be disposed to cover the upper edge area  515   a , and the second barrier area  540   b  may be disposed to cover the side edge area  515   b . According to an embodiment, the ion barrier  540  may be disposed to cover a portion of the positive electrode substrate  511   a . For example, the second barrier area  540   b  may be disposed to cover the whole or part of the side surface  516  (surface in the −X-axis direction) of the positive electrode substrate  511   a.    
     According to various embodiments (referring to b-2), the insulation layer  550  may be disposed adjacent to and to surround at least a portion of the ion barrier  540 . For example, the first insulation portion  550   a  of the insulation layer  550  may be disposed on an upper portion (e.g., in the +Z-axis direction) of the first barrier area  540   a , and the second insulation portion  550   b  may be disposed on an upper portion (e.g., in the −X-axis direction) of the second barrier area  540   b.    
     According to various embodiments, similar to the description made in connection with (b-1) and (b-2), the insulation layer  550  may be disposed to cover the edge area  516  of the positive electrode mixture  511   b  and/or the side surface (e.g., the surface in the −X-axis direction) of the positive electrode substrate  511   a , and the ion barrier  540  may then be disposed on the upper portion (e.g., in the +Z-axis direction) of the insulation layer  550  ((c-1) and (c-2)). 
     Referring to  FIG.  14   , the positive electrode mixture  611   b  may include a barrier receiving area  615   a  formed in an edge area of the upper surface (e.g., the surface in the +Z-axis direction). The description of the positive electrodes  311 ,  411 , and  511  according to the above-described embodiments may be applied to the positive electrode  611  of  FIG.  14   . 
     According to various embodiments, a partial area of the edge of the upper surface (e.g., the surface in the +Z-axis direction) of the positive electrode mixture  611   b  may be etched. For example, the etched partial area of the front edge of the positive electrode mixture  611   b  may be referred to as an etch area  619 . For example, the etched area  619  may be etched to form the barrier receiving area  615   a.    
     According to various embodiments, the ion barrier  640  and/or insulation layer  650  may be disposed in the barrier receiving area  615   a . According to an embodiment, at least a portion of the ion barrier  640  and/or the insulation layer  650  may be disposed in the barrier receiving area  615   a , and another portion may be disposed to cover the whole or part of the side surface (e.g., in the −X-axis direction) of the positive electrode substrate  611   a  and the side area  615   b  of the positive electrode mixture  611   b.    
     According to an embodiment (referring to b-1), the first barrier area  640   a  of the ion barrier  640  may be disposed in the barrier receiving area  615   a , and the second barrier area  640   b  may be disposed to cover the side edge area  615   b . According to an embodiment, the second barrier area  640   b  may be disposed to cover the whole or part of the side surface  616  of the positive electrode substrate  611   a . For example, the thickness of the first barrier area  640   a  may correspond to the depth of the barrier receiving area  615   a.    
     According to an embodiment (referring to b-2), after the ion barrier  640  is disposed, the insulation layer  650  may be disposed to cover at least a portion of the ion barrier  640 . For example, the first insulation portion  650   a  of the insulation layer  650  may be disposed on an upper portion (e.g., in the +Z-axis direction) of the first barrier area  640   a , and the second insulation portion  650   b  may be disposed on the second barrier area  640   b.    
     According to an embodiment (referring to b-3), after the ion barrier  640  is disposed, the insulation layer  650  may be disposed only in a partial area of the ion barrier  640 . For example, the insulation layer  650   b  may be disposed only on the second barrier area  640   b  or, may be disposed only on the first barrier area  640   a.    
     According to various embodiments, the insulation layer  650  may be disposed first and the ion barrier  640  may be disposed on the insulation layer  650  ((c-1), (c-2) and (c-3)). In this case, the description made in connection with (b-1), (b-2) and (b-3) may apply. For example, the insulation layer  650  may be disposed to cover the barrier receiving area  615   a  formed in the edge area of the upper surface (e.g., the surface in the +Z-axis direction) of the positive electrode mixture  611   b , the side edge area  615   b , and/or the side surface (e.g., the surface in the −X-axis direction) of the positive electrode substrate  511   a , and the ion barrier  640  may be disposed on the insulation layer  650  ((c-1) and (c-2)). 
     Referring to  FIG.  15   , the positive electrode mixture  711   b  may include a barrier receiving area  715   a  formed in an edge area of the side surface (e.g., the surface in the −X-axis direction). According to various embodiments, the side etched area  719  of the positive electrode mixture  711   b  may be etched, forming a barrier receiving area  715   b . The description of the positive electrodes  311 ,  411 ,  511 , and  611  according to the above-described embodiments may be applied to the positive electrode  711  of  FIG.  15   . 
     According to various embodiments, at least a portion of the ion barrier  740  and/or insulation layer  750  may be disposed in the barrier receiving area  715   a . According to an embodiment, at least a portion of the ion barrier  740  and/or the insulation layer  750  may be disposed to cover the whole or part of the upper surface (e.g., the surface in the +Z-axis direction) of the positive electrode substrate  711   a  and the barrier receiving area  715   b , and another portion may be disposed to cover the upper edge area  715   a.    
     According to an embodiment (referring to b-1), first, the first barrier area  740   a  of the ion barrier  740  may be disposed to cover the upper edge area  715   a , and the second barrier area  740   b  may be disposed to cover the barrier receiving area  715   b . According to an embodiment, the second barrier area  740   b  may be disposed to cover the edge area  716   a  of the upper surface (e.g., the surface in the +Z-axis direction) of the positive electrode substrate  711   a.    
     According to an embodiment (referring to b-2), after the ion barrier  740  is disposed, the insulation layer  750  may be disposed adjacent to and to surround at least a portion of the ion barrier  740 . For example, the first insulation portion  750   a  of the insulation layer  750  may be disposed on an upper portion (e.g., in the +Z-axis direction) of the first barrier area  740   a , and the second insulation portion  750   b  may be disposed on an upper portion (e.g., in the −X-axis direction) of the second barrier area  740   b . Further, the second insulation portion  750   b  may be disposed to cover the edge area of the side surface (e.g., in the −X-axis direction) of the positive electrode substrate  711   a.    
     According to an embodiment (referring to b-3), after the ion barrier  740  is disposed, the insulation layer  750  may be disposed only in a partial area of the ion barrier  740 . For example, the insulation layer  750   b  may be disposed only on the second barrier area  740   b . In this case, the insulation layer  750   b  may be disposed to cover the side edge area  716   a  of the positive electrode substrate  711   a . As another example, the insulation layer  750   b  may be disposed only on the first barrier area  740   a  (e.g., in the +Z-axis direction). 
     According to various embodiments, at least a portion of the insulation layer  750  may be disposed between the ion barrier  740  and the positive electrode mixture  711   b  ((c-1), (c-2) and (c-3)). In this case, the description made in connection with (b-1), (b-2) and (b-3) may apply. For example, the insulation layer  750  may first be disposed to cover the upper edge area  715   a  of the positive electrode mixture  711   b , the barrier receiving area  715   b  connected with the upper edge area  715   a , and/or the side edge area  716   b  of the positive electrode substrate  711   a , and the ion barrier  740  may be disposed on the insulation layer  750  ((c-1), (c-2), and (c-3)). 
     Referring to  FIG.  16   , the positive electrode mixture  811   b  may include a first barrier receiving area  815   a  formed in the edge area of the upper surface (e.g., in the +Z-axis direction) and a second barrier receiving area  815   b  formed in the edge area of the side surface (e.g., in the −X-axis direction). According to various embodiments, the first etch area  819   a , which is the edge area of the upper surface (e.g., the surface in the +Z-axis direction) of the positive electrode mixture  811   b , and the second etch area  819   b , which is the edge area of the side surface (e.g., the surface in the −X-axis direction) may be etched, forming the first barrier receiving area  815   a  and the second barrier receiving area  815   b . The description of the positive electrodes  311 ,  411 ,  511 ,  611 , and  711  according to the above-described embodiments may be applied to the positive electrode  811  of  FIG.  16   . 
     According to various embodiments, the ion barrier  840  and/or insulation layer  850  may be disposed in the first barrier receiving area  815   a  and the second barrier receiving area  815   b . According to an embodiment, at least a portion of the ion barrier  840  and/or insulation layer  850  may be disposed to cover the first barrier receiving area  815   a , and another portion may be disposed to cover the whole or part of the upper surface  816   a  and/or the side surface  816   b  of the positive electrode substrate  811   a  and the second barrier receiving area  815   b.    
     According to various embodiments (referring to b-1 or b-2), first, the first barrier area  840   a  of the ion barrier  840  may be disposed to cover the first barrier receiving area  815   a , and the second barrier area  840   b  may be disposed to cover the second barrier receiving area  815   b . According to an embodiment, after the ion barrier  840  is stacked, the insulation layer  850  may be stacked on the ion barrier  840 . For example, the first insulation portion  850   a  may be disposed on the first barrier area  840   a , and the second insulation portion  850   b  may be disposed on the second barrier area  840   b . According to an embodiment, the sum of the thicknesses of the first barrier area  840   a  and the first insulation portion  850   a  may correspond to the depth of the first barrier receiving area  815   a . According to an embodiment, the stacked thickness of the second barrier area  840   b  and the second insulation portion  850   b  may correspond to the depth of the second barrier receiving area  815   b , and the second barrier area  840   b  and the second insulation portion  850   b  may be disposed to cover the whole or part of the edge  816   a  of the upper surface (e.g., the surface in the +Z-axis direction) of the positive electrode substrate  811   a . According to another embodiment, the thickness of the second barrier area  840   b  and the depth of the second barrier receiving area  815   b  may correspond to each other, so that at least a portion of the second barrier area  840   b  may be disposed to cover the upper edge  816   a  of the positive electrode substrate  811   a , and the second insulation portion  850   b  may be disposed to cover the edge  816   b  of the side surface (e.g., the surface in the −X-axis direction) of the positive electrode substrate  811   a.    
     According to various embodiments (referring to b-3 or b-4), the depth of the barrier receiving area  815  and the stacked thickness of the ion barrier  840  may correspond to each other. For example, the ion barrier  840  may be disposed to cover the first and second barrier receiving areas  815   a  and  815   b  and the upper edge area  816   a  of the positive electrode substrate  811   a . According to an embodiment, after the ion barrier  840  is stacked, the insulation layer  850  may be disposed to protrude from a front portion and/or side surface of the positive electrode mixture  811   b . According to an embodiment, the insulation layer  850  may be disposed only in a partial area of the ion barrier  840 . For example, the insulation layer  850   b  may be disposed only on the second barrier area  840   b . In this case, the insulation layer  850   b  may be disposed to cover the side edge  816   b  of the positive electrode substrate  811   a . As another example, the insulation layer  850  may be disposed to cover the whole of the ion barrier  840  and the side edge  816   b  of the positive electrode substrate  811   a.    
     According to various embodiments (referring to b-1, b-2, b-3, and b-4), the thickness to which the ion barrier  840  and/or insulation layer  850  is deposited may be determined by considering the depth of the barrier receiving area  815 . According to an embodiment, the sum of the thicknesses at which the ion barrier  840  and the insulation layer  850  are stacked may correspond to the depth of the barrier receiving area  815 . For example, the sum of the thicknesses of the first barrier area  840   a  and the first insulation portion  850   a  may correspond to the thickness of the first etch area  819   a , and the sum of the second barrier area  840   b  and the second insulation portion  850   b  may correspond to the thickness of the second etch area  819   b . For example, the thickness at which the ion barrier  840  and/or the insulation layer  850  is deposited may also be expressed as determined considering the thickness of the area where the positive electrode mixture  811   b  is etched (e.g., the first etch area  819   a  and the second etch area  819   b ). According to another example, the stacked thickness of one of the ion barrier  840  or the insulation layer  850  may correspond to the depth of the barrier receiving area  815 . For example, the thickness of the ion barrier  840  may correspond to the thickness of the etch area  819  and, as the insulation layer  850  is stacked on the ion barrier  840 , the insulation layer  850  may be disposed to protrude from the upper portion (e.g., in the +Z-axis direction) and/or the side portion (e.g., in the −X-axis direction) of the ion barrier  840 . 
     According to various embodiments, the insulation layer  850  may be disposed first and the ion barrier  840  may be disposed on the insulation layer  850 . As another example, the insulation layer  850  may be disposed between the ion barrier  840  and the positive electrode mixture  811  ((c-1), (c-2), (c-3), and (c-4)). In this case, the description made in connection with (b-1), (b-2), (b-3), and (b-4) may apply. 
     In the above embodiments, it has been mainly described that some areas of the positive electrode mixtures  411   b ,  511   b ,  611   b ,  711   b , and  811   b  are etched, but embodiments are not limited thereto. As an example, embodiments related to the etching of the positive electrode mixture  411   b ,  511   b ,  611   b ,  711   b , or  811   b  according to various embodiments may also be achieved by adjusting the coating thickness of the positive electrode mixture  411   b ,  511   b ,  611   b ,  711   b , or  811   b . For example, the barrier receiving area (e.g., the barrier receiving area  420  of  FIG.  10   ) of the positive electrode mixture (e.g., the positive electrode mixture  411   a  of  FIG.  10   ) may be provided by a coating of a positive electrode active material layer, corresponding to the side area (e.g., the side area A 2  of  FIG.  11   ) of the positive electrode mixture (e.g., the positive electrode mixture  411   a  of  FIG.  10   ), thinner than the center area (e.g., the center area A 1  of  FIG.  11   ). Similarly, it will be understood that all the etching-related embodiments of the disclosure may be achieved by adjusting the coating thickness of the positive electrode mixture. 
     According to various embodiments, there may be provided a battery comprising a negative electrode (e.g., the negative electrode  313  of  FIG.  9   ) including a negative electrode substrate layer (e.g., the negative electrode substrate layer  313   a  of  FIG.  9   ) and a negative electrode active material-coated negative electrode mixture layer (e.g., the negative electrode mixture  313   b  of  FIG.  9   ) on the negative electrode substrate layer; a positive electrode (e.g., the positive electrode  311  of  FIG.  9   ) disposed to face the negative electrode including a positive electrode substrate layer (e.g., the positive electrode substrate  311   a  of  FIG.  9   ), a positive electrode active material-coated positive electrode mixture layer (e.g., the positive electrode mixture  311   b  of  FIG.  9   ) on the positive electrode substrate layer, and a barrier layer (e.g., the ion barrier  430  of  FIG.  10   ) configured to suppress transfer of ions from the positive electrode mixture layer, and a separator (e.g., the separator  415  of FIG.  9 ) disposed between the negative electrode and the positive electrode, wherein the positive electrode mixture layer includes a first area (e.g., the center area A 1  of  FIG.  11   ) positioned in a center area of the positive electrode mixture layer and a second area (e.g., the side edge area A 2  of  FIG.  11   ) positioned in an edge of the positive electrode active material layer, and wherein the barrier layer is disposed to cover at least a portion of the second area to limit direct transfer of the ions from the first area to the negative electrode. 
     According to an embodiment, there may be provided the battery, wherein the second area includes at least a portion from an upper edge area of the positive electrode mixture layer to a side surface extending from the edge area. 
     According to an embodiment, there may be provided the battery, wherein the second area is formed as at least a portion of an upper edge of the positive electrode mixture layer is etched. 
     According to an embodiment, there may be provided the battery, wherein the second area is formed as at least a portion of a side surface of the positive electrode mixture layer is etched. 
     According to an embodiment, there may be provided the battery, wherein the second area is formed as a portion of an upper surface and of the positive electrode mixture layer and at least a portion of a side surface of the positive electrode mixture layer are etched. 
     According to an embodiment, there may be provided the battery, wherein the barrier layer is disposed to cover at least a portion of the positive electrode substrate layer. 
     According to an embodiment, there may be provided the battery, further comprising an insulation layer (e.g., the insulation layer  440  of  FIG.  12   ) configured to suppress movement of electrons; and wherein the insulation layer corresponds to at least a portion of the barrier layer and is disposed inside or outside the barrier layer. 
     According to an embodiment, there may be provided the battery, wherein the insulation layer is disposed to further cover at least a portion of the positive electrode substrate layer. 
     According to an embodiment, there may be provided the battery, wherein the barrier layer is formed of at least one material among a metal nitride or a polymer material. 
     According to an embodiment, there may be provided the battery, wherein the barrier layer is deposited using atomic layer deposition. 
     According to an embodiment, there may be provided the battery, wherein a width of the negative electrode mixture layer corresponds to a width of the positive electrode mixture layer. 
     According to an embodiment, there may be provided the battery, wherein the battery includes a jelly-roll type or a stack type. 
     According to an embodiment, there may be provided the battery, wherein a thickness of the second area is formed to be smaller than a thickness of the first area. 
     According to an embodiment, there may be provided the battery, wherein the second area is formed as at least a portion of an upper edge of the positive electrode mixture layer is etched or is coated to be thinner than a center area of the positive electrode mixture layer. 
     According to an embodiment, there may be provided the battery, wherein a length of the second area is formed to be 5% to 10% of a length of the first area. 
     According to various embodiments, there may be provided a battery comprising a negative electrode (e.g., the negative electrode  313  of  FIG.  9   ) including a negative electrode substrate layer (e.g., the negative electrode substrate  313   a  of  FIG.  9   ) and a negative electrode active material-coated negative electrode mixture layer (e.g., the negative electrode mixture  313   b  of  FIG.  9   ) on the negative electrode substrate layer, a positive electrode (e.g., the positive electrode  311  of  FIG.  9   ) disposed to face the negative electrode including a positive electrode substrate layer (e.g., the positive electrode substrate  311   a  of  FIG.  9   ), a positive electrode active material-coated positive electrode mixture layer (e.g., the positive electrode mixture  311   b  of  FIG.  9   ) on the positive electrode substrate layer; and a barrier layer (e.g., the ion barrier  430  of  FIG.  11   ) for suppressing transfer of ions from the positive electrode mixture layer, and a separator (e.g., the separator  415  of  FIG.  9   ) disposed between the negative electrode and the positive electrode, wherein the positive electrode mixture layer includes a main area (e.g., the center area A 1  of  FIG.  11   ) storing cations and including a transfer area for transferring the cations to the negative electrode; and an additional area (e.g., the additional area A 2  of  FIG.  11   ) extending from the main area to additionally store the cations, and wherein the barrier layer is disposed to cover the additional area to suppress direct transfer, to the negative electrode, of the cations stored in the additional area. 
     According to an embodiment, there may be provided the battery, wherein there is included a barrier receiving area (e.g., the barrier receiving area  420  of  FIG.  10   ) formed as at least a portion of the additional area is etched, and the barrier layer is disposed in the barrier receiving area. 
     According to an embodiment, there may be provided the battery, wherein the barrier layer is disposed to cover at least a portion of the positive electrode substrate layer. 
     According to an embodiment, there may be provided the battery, further comprising an insulation layer (e.g., the insulation layer  440  of  FIG.  12   ) configured to suppress movement of electrons, and wherein the insulation layer is disposed to correspond to at least a portion of an inside or outside of the barrier layer. 
     According to an embodiment, there may be provided the battery, wherein the insulation layer is disposed to cover at least a portion of the positive electrode substrate layer. 
     According to an embodiment, there may be provided the battery, wherein the barrier layer includes a metal nitride or a polymer material. 
     According to an embodiment, there may be provided the battery, wherein the barrier layer is deposited using atomic layer deposition. 
     According to an embodiment, there may be provided the battery, wherein a width of the negative electrode mixture layer corresponds to a width of the positive electrode mixture layer. 
     According to various embodiments, there may be provided an electronic device comprising a processor, and a battery (e.g., the battery  300  of  FIG.  6   ) for supplying power to the processor; wherein the battery includes a negative electrode (e.g., the negative electrode  413  of  FIG.  10   ) including a negative electrode substrate layer (e.g., the negative electrode substrate layer  413   a  of  FIG.  10   ) and a negative electrode active material-coated negative electrode mixture layer (e.g., the negative electrode mixture  413   b  of  FIG.  10   ) on the negative electrode substrate layer, a positive electrode (e.g., the positive electrode  411  of  FIG.  10   ) disposed to face the negative electrode including a positive electrode substrate layer (e.g., the positive electrode substrate  411   a  of  FIG.  10   ), a positive electrode active material-coated positive electrode mixture layer (e.g., the positive electrode mixture  411   b  of  FIG.  10   ) on the positive electrode substrate layer; and a barrier layer (e.g., the ion barrier  430  of  FIG.  10   ) for suppressing transfer of ions from the positive electrode mixture layer; and a separator (e.g., the separator  415  of  FIG.  10   ) disposed between the negative electrode and the positive electrode, wherein the positive electrode mixture layer includes a first area (e.g., the center area A 1  of  FIG.  11   ) positioned in a center area of the positive electrode mixture layer and a second area (e.g., the side edge area A 2  of  FIG.  11   ) positioned in an edge of the positive electrode active material layer, and wherein the barrier layer is disposed to cover at least a portion of the second area to limit direct transfer of the ions from the first area to the negative electrode. 
     While the disclosure has been shown and described with reference to embodiments thereof, it will be apparent to those of ordinary skill in the art that various changes in form and detail may be made thereto without departing from the spirit and scope of the disclosure as defined by the following claims and their equivalents.