# Patent

## Title
Rechargeable battery

## Abstract

Technologies are generally described for a battery, a method for implementing a battery and a rechargeable battery system. In some examples, the rechargeable battery system includes a battery. The battery may include a first electrode including a tantalum component, a vanadium component and a boron component. The battery may further include a second electrode and an electrical insulator between the first and the second electrode. The battery system may include a housing, where the housing includes the first electrode, and where the housing is effective to communicate light and oxygen to the first electrode. A sensor may be disposed so as to be effective to detect a reaction of tantalum and oxygen in the housing and generate a reaction signal in response. A processor may be in electrical communication with the sensor and effective to receive the reaction signal and generate an indication based on the reaction signal.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a U.S. National Stage filing under 35 U.S.C. §371 of International Application No. PCT/IB32011/050004, filed Jan. 3, 2011; which claims priority under 35 U.S.C. §119(a) to India application 3484/CHE/2010, filed Nov. 19, 2010. The entirety of both of these applications is incorporated by reference.
BACKGROUND
Unless otherwise indicated, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section.
A battery may be used to store energy. Some batteries may be disposed after their stored energy is expended. The replacement of expended batteries with new batteries can result in undesirable waste and cost. To deal with this issue, some batteries have been created to be rechargeable. Rechargeable batteries tend to have limited use periods.
SUMMARY
In one example, a battery is generally described. The battery may include a first electrode including a tantalum component, a vanadium component and a boron component. The battery may further include a second electrode and an electrical insulator between the first electrode and the second electrode.
In one example, a method of implementing a battery is generally described. The method may include combining a tantalum component, a vanadium component and a boron component to form a first electrode. The method may further include placing an insulator in between the first electrode and a second electrode.
In one example, a rechargeable battery system is generally described. In some examples, the rechargeable battery system includes a battery, a housing, a sensor, and a processor. The battery may include a first electrode including a tantalum component, a vanadium component and a boron component, a second electrode and
an electrical insulator between the first electrode and the second electrode. The housing may include the first electrode. The housing may be effective to communicate light and oxygen to the first electrode. The sensor may be disposed so as to be effective to detect a reaction of the tantalum component and oxygen in the housing. The sensor may be effective to generate a reaction signal in response to the reaction. The processor may be in communication with the sensor. The processor may be effective to receive the reaction signal and generate an indication based on the reaction signal.
The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, examples, and features described above, further aspects, examples, and features will become apparent by reference to the drawings and the following detailed description.



BRIEF DESCRIPTION OF THE FIGURES
The foregoing and other features of this disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. Understanding that these drawings depict only several examples in accordance with the disclosure and are, therefore, not to be considered limiting of its scope, the disclosure will be described with additional specificity and detail through use of the accompanying drawings, in which:
FIG. 1 is a side view of an example of a battery system;
FIG. 2 depicts a flow diagram for an example process for implementing a battery;
FIG. 3 illustrates a computer program product that can be utilized to implement a battery; and
FIG. 4 is a block diagram illustrating an example computing device that is arranged to implement a battery;



all arranged according to at least some embodiments described herein.
DETAILED DESCRIPTION
The following detailed description contains reference to the accompanying drawings, that may form a part hereof. The drawings contain similar symbols typically identify similar components, unless context dictates otherwise. The illustrative examples described in the detailed description, drawings, and claims are not meant to be limiting. Other examples may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented. It will be readily understood that the aspects of the present disclosure, as generally described, and illustrated in the Figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated.
This disclosure is generally drawn, inter alia, to methods, apparatus, systems, devices, and computer program products related to a rechargeable battery.
Briefly stated, technologies are generally described for a battery, a method for implementing a battery and a rechargeable battery system. In some examples, the rechargeable battery system includes a battery. The battery may include a first electrode including a tantalum component, a vanadium component and a boride component. The battery may further include a second electrode and an electrical insulator between the first and the second electrode. The battery system may include a housing, where the housing includes the first electrode, and where the housing is effective to communicate light and oxygen to the first electrode. A sensor may be disposed so as to be effective to detect a reaction of tantalum and oxygen in the housing and generate a reaction signal in response. A processor may be in electrical communication with the sensor and effective to receive the reaction signal and generate an indication based on the reaction signal.
FIG. 1 is a side view of an example of a battery system 100 arranged according to at least some embodiments described herein. An example battery system 100 may include a battery 180 in housing 106. Housing 106 may include an electrode 140 including one or more electrode components 102. Housing 106 may further include an electrode 118. Housing 106 may include walls 114 which may define holes 112 in optical communication with electrode components 102. Holes 112 may be effective to allow light 108 from a light source 120, in communication with housing 106, to be exposed to electrode components 102 as is explained in more detail below. An electrical insulator 122 may be placed between electrode component 102 and electrode 118 in housing 106. Electrode components 102 may be connected through an electrical conductor 136. Housing 106 may further include walls defining holes 124 effective to allow air 110 to flow into and out of housing 106. Battery system 100 may further include a sensor 204, and/or or a valve 208. Battery 180 may include electrode 140, electrode 118 and/or insulator 122.
At least some of these elements may be arranged in communication with a processor 156 through a communication link 162. In some examples, processor 156 may be adapted to be in communication with a memory 158 that includes instructions 160 stored therein. Processor 156 may be configured, such as by instructions 160, to control at least some of the operations described below.
An example of electrode component 102 may be an anode where oxidation occurs. Another example of electrode component 102 may be a cathode where reduction occurs. In some examples, battery system 100 may be arranged so as to generate voltage across and/or a current through a load 104. Electrode 118 may be either a cathode or an anode. In an example electrode 140 is an anode and electrode 118 is a cathode.
As shown in the magnified view of electrode component 102a, some examples of electrode component 102 may include a tantalum vanadium boride component 126 disposed on a substrate 128. Substrate 128 may be of any material. In an example, substrate 128 may be made of steel and may include channels effective to receive component 126. Component 126 may include tantalum vanadium boride 132 coated with an indium tin oxide coating 134. In some examples, component 126 may be doped on substrate 128. Component 126 may include a vanadium component such as a vanadium metal and/or vanadium oxides. Component 126 may include a combined vanadium component and boride component which may include VB2. Component 126 may include a tantalum component such as a tantalum metal and/or a tantalum oxide or tantalum pentaoxide. Some examples of component 126 may include a boride component such as boron and boron oxides. Some examples of the vanadium component and/or tantalum component and/or boride component may each include particles having a particle size of about 500 nm to about 1 μm.
In some examples, indium tin oxide coating 134 may be applied using a coating machine 130. Coating machine 130 may include a dip coating machine, a spin coating machine, and/or a sputtering machine such as DC magnetron sputtering machine. Some other examples of coating machine 130 may include an rf magnetron sputtering, thermal evaporation machine, an ion beam sputtering machine, a pulsed laser deposit ion machine, a sol-gel process machine, a wet chemical route machine, etc. Machine 130 may be adapted to melt the indium tin oxide coating material by heating the indium tin oxide coating material to a temperature of from about 475° C. to about 525° C.
An example of the indium tin oxide coating material may include indium oxide and tin oxide, such as In2O3 and/or SnO2. Some examples of amounts of indium oxide and tin oxide may include a 9:1 ratio of indium oxide to tin oxide. In an example, the indium tin oxide may include In2O3 present in an amount of about 90 percent weight and SnO2 may be present in an amount of about 10 percent weight.
Some examples of making indium tin oxide coating material 134 may include cutting indium oxide material and tin oxide material into pieces of from about 1 500 nm to about 50000 nm. In some examples, the pieces of indium oxide and tin oxide may be placed into a container such as a quartz tube 138. Container 138 may be closed with a vacuum and the pieces may be annealed for about 12 hours to about 30 hours at a temperature of from about 475 to about 525 degrees Celsius. In one example, the annealed product indium tin oxide material can then be removed from container 138 and coated on tantalum vanadium boride 132.
In an example, the tantalum component, vanadium component and boride component can be coated with indium tin oxide coating 134 when these components are separate individual components. Thereafter, the coated tantalum component, vanadium component and boride component may be combined into a mixture to form electrode component 102.
In an example, the tantalum, vanadium and boride components may be combined as particles together, in a mixture. The mixture may thereafter be coated with indium tin oxide 134.
Some examples of forming tantalum vanadium boride component 126 may include combining inorganic metals. Some examples of forming tantalum vanadium boride component 126 may include doping a combination of a vanadium component and a boride component with a tantalum component. Some examples of doping a combination of a vanadium component and boride component with a tantalum component may include mixing of these components together by crushing the components and mixing the crushed components into a paste in an inert atmosphere. The paste may then be packed into any desirable form to form tantalum vanadium boride component 126. Some examples of shapes and/or configurations of tantalum vanadium boride component 126 may include sheets, rods, cones, ellipses, cubes, rectangles, pins, and the like.
One example of the amount of each of tantalum component, vanadium component, and boride component are such that they can be present as a ratio of from about 1:1:4 to about 3:3:6 respectively. Some examples of such a ratio can be about 2:2:5 or about 5:5:5 of Vn:Ta:B.
In some examples, battery housing 106 may include one or more internal surfaces 116 that may be coated with indium tin oxide coating 134. Some examples of the indium tin oxide coating may be the same or different indium tin oxide coating material used to coat tantalum vanadium boride 132. In one example the technique of coating at least one of the internal surfaces 116 may be the same and/or different technique used to coat vanadium boride component, tantalum component or boride component described above.
In an example, battery system 100 may be effective to generate an electrochemical potential and/or electrical discharge. For example, battery system 100 may be effective to generate an electrochemical potential of about 0.5V to about 230 V.
Among other possible benefits, a battery system in accordance with the disclosure may produce a lower level of corrosive byproduct than other systems. Examples of a corrosive byproduct that may be produced may be the anhydride salts of boric acid (H3BO3) and vanadic acid (H3VO4). Such corrosive byproducts of a battery system 100 can include cations containing B2O3 and V2O5 species in an alkali hydroxide solvent. Hydrogen gas may also be a corrosive byproduct. In one example, the battery system 100 described herein may decrease the production of such corrosive byproducts. Without wishing to be bound to any particular theory, it has been discovered unexpectedly that the tantalum component when combined with vanadium component and boron component, can decrease the production of corrosive byproducts such as those described. In addition, it has been unexpectedly discovered that battery system 100 can be recharged by exposing electrode component 102 to light 108 as is described in more detail below.
Battery system 100 may provide an easily adoptable process for making electrically rechargeable batteries that do not require the removal of either a spent anode or a spent electrolyte. The indium oxide coating may further decrease the production of corrosive byproducts and allow light to be incident upon the tantalum vanadium boride component.
Some examples of reactions in battery system 100 with oxygen from air 110 may be as follows:

VB2+2O2→VO2+B2O3 ΔHr=−1700 KJ/mole  (1)

2VB2+5O2→V(BO2)4+VO2 ΔHr=−727.1 KJ/mole  (2)

2VB2+2O2+Ta→V*+TaO*+B2O3 ΔHr=−1179.1 KJ/mole  (3)

V*+TaO*+B2O3+2O2→VB2+Ta2O5 ΔHr=732.8 KJ/mole  (4)

VB2+Ta2O5+2O2→V*+TaO*+4O2 ΔHr=540.2 KJ/mole  (5)

In some examples, B2O3, generated in reaction (1) and (4), may be a corrosive material. Boride corrosion may result in a chemical loss of the electrochemical capacity, evolved hydrogen may be flammable, and the evolved hydrogen can swell or even crack a battery.
In addition VO2 and V(BO2)4 generated in reactions (1) and (2) may also be corrosive byproducts. One example of how the present disclosure provides for a significant unexpected advantage, is the use of a tantalum component in reactions (3)-(5) above that may be used to consume corrosive B2O3 byproduct and to inhibit the formation of corrosive byproducts VO2 and V(BO2)4. In one example of battery system 100, the indium tin oxide coating material may be a chemically inert material which prevents corrosion of the housing 106 that may occur from B2O3 or VO2 and V(BO2)4. In some examples, the indium tin oxide coating material conducts electrons generated in the above noted reactions 3-5 to a point where load 104 may be connected.
In some examples, the tantalum component may prevent the formation of VO2. In one example of battery system 100, as the tantalum component may have a greater affinity for oxygen than vanadium, TaO2 may be formed, thereby releasing vanadium to recombine with boron. In this example, a continuous electrochemical reaction may proceed in the presence of air. In these examples, these reactions also prevent formation of corrosive borate.
In one example of battery system 100, electrochemical reactions 3-5 continue as long as the tantalum component surface oxygen vacancies (SOV's) sites are available for bonding with oxygen in air 110. In one example of battery system 100, the tantalum component initiates the redox reaction where V2O5 is reduced and Ta reacts with oxygen to produce tantalum oxide and electrons as shown by the reactions 6 and 7 below.

TaO2+O→TaO*+O2  (6)

Ta+O2(air)→TaO2+2e−  (7)

In some examples, over time, the chemical energy or the discharge potential of battery system 100 reduces gradually as the availability of SOV's in the tantalum component decreases. In one example of battery system 100, once these SOV's are at least partially occupied by oxygen, electrode components 102 may be recharged.
In some examples, light 108 may be used to recharge battery system 100. Some examples of light source 120 may include visible light, such as sunlight, ultraviolet light, or light from a high beam light emitting diode (HB LED) source. In one example of battery system 100, the tantalum component can be a photocatalytic tantalum component such that, electrode component 102 can be recharged through exposure to light 108. In one example of battery system 100, a photocatalytic tantalum component may be used to enable the conversion of vanadium oxide to vanadium boride when the tantalum component is exposed to light 108 as is explained in more detail below.
In one example, TaVB2 may be regenerated from exposure of Ta2O5 to light, such as light at 632 nm wavelength, as shown in chemical reaction (8) below. In one example, Ta2O5 may release oxygen in the presence of a non-oxygen atmosphere such as nitrogen gas atmosphere or in an inert gas flow chamber or a vacuum. In one example, TaVB2 may be regenerated from exposure of TaOxNy to UV light of 282 nm wavelength as shown in chemical reaction (9) shown below.

Ta2O5+hγ(632 nm)→Ta*+O2(g)  (8)

TaOxNy+hγ(282 nm)→Ta*+O2(g)  (9)

In some examples battery 180 may provide for the chemical regeneration of VB2, shown in below chemical reaction (10). Ta2O5 formed during the reaction can be regenerated to Ta by the above described photocatalytic process in an inert atmosphere or through a vacuum.

2B2O3+2V2O5+6Ta→2VB2+3Ta2O5+1⁄2O2  (10)

Some examples of sensor 204 may include at least one of a pressure sensor, an oxygen sensor, or a flow sensor. Sensor 204 may be adapted to detect a reaction of tantalum and oxygen in housing 106. In some examples, sensor 204 may be effective to detect a pressure gradient, or absence thereof, within housing 106 and generate an electric signal in response. Some examples of a pressure gradient within housing component 106 may be a difference in pressure between housing 106 and the atmospheric pressure surrounding housing 106.
In some examples of battery system 100, while battery 180 is generating current, air 110 may be fed into housing 106 resulting in a first pressure gradient. In these examples, oxygen in air 110 may be consumed by tantalum and vanadium in electrode component 102. The pressure gradient may change after at least some of the SOV's of the tantalum component of electrode component 102 are occupied. Sensor 204 may be adapted to produce an electrical signal upon detecting the change in pressure gradient above a threshold. Sensor 204 may be configured to send the signal to processor 156. Processor 156 may be configured to receive the signal and generate a recharge signal, such as a light, indicating that a charge of battery 180 is below a threshold. As discussed above, in some examples, battery system 100 may be recharged by exposing electrode components 102 to light 108.
FIG. 2 depicts a flow diagram for an example process 200 for implementing a battery in accordance with at least some embodiments described herein. The process in FIG. 2 could be implemented using, for example, system 100 discussed above. An example process may include one or more operations, actions, or functions as illustrated by one or more of blocks S2, S4, S6, S8, S10, S12, S14 and/or S16. Although illustrated as discrete blocks, various blocks may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Processing may begin at block S2.
At block S2, a battery may be implemented by combining a tantalum component, a vanadium component, and a boron component to form a first electrode. For example, the tantalum component, vanadium component and boron component may be crushed and combined into a paste. Processing may continue from block S2 to block S4.
At block S4, at least one of the tantalum component, vanadium component, or boron component may be coated with an indium tin oxide coating. Processing may continue from block S4 to block S6.
At block S6, an insulator may be placed between a second electrode and the first electrode. Processing may continue from block S6 to block S8.
At block S8, the first electrode, the second electrode and the insulator may be placed in a housing. In some examples, the housing may be effective to communicate light and air to the first electrode. Processing may continue from block S8 to block S10.
At block S10, a sensor in the housing may be adapted to detect a pressure gradient in the housing. Processing may continue from block S10 to block S12.
At block S12, in examples where the change in pressure gradient is above a threshold, the sensor may be adapted to send a signal to a processor. The signal may indicate that the pressure change is above the threshold. Processing may continue from block S12 to block S14.
At block S14, the processor may be configured to receive the signal from the sensor and generate an indication that the battery should be recharged. For example, the processor may be configured to generate a light indicating that the battery should be recharged. Processing may continue from block S14 to block S16.
At block S16, in response to the indication from the processor, the battery may be recharged by exposing the first electrode to light.
FIG. 3 illustrates a computer program product 300 that can be utilized to implement a battery arranged in accordance with at least some embodiments described herein. Program product 300 may include a signal bearing medium 302. Signal bearing medium 302 may include one or more instructions 304 that, when executed by, for example, a processor, may provide the functionality described above with respect to FIGS. 1 and 2. Thus, for example, referring to system 100, processor 156 may undertake one or more of the blocks shown in FIG. 3 in response to instructions 304 conveyed to the system 100 by medium 302.
In some implementations, signal bearing medium 302 may encompass a computer-readable medium 306, such as, but not limited to, a hard disk drive, a Compact Disc (CD), a Digital Video Disk (DVD), a digital tape, memory, etc. In some implementations, signal bearing medium 302 may encompass a recordable medium 308, such as, but not limited to, memory, read/write (R/W) CDs, R/W DVDs, etc. In some implementations, signal bearing medium 302 may encompass a communications medium 310, such as, but not limited to, a digital and/or an analog communication medium (e.g., a fiber optic cable, a waveguide, a wired communications link, a wireless communication link, etc.). Thus, for example, program product 300 may be conveyed to one or more modules of the system 100 by an RF signal bearing medium 302, where the signal bearing medium 302 is conveyed by a wireless communications medium 310 (e.g., a wireless communications medium conforming with the IEEE 802.11 standard).
FIG. 4 is a block diagram illustrating an example computing device that is arranged to implement of a battery according to at least some embodiments described herein. In a very basic configuration 402, computing device 400 typically includes one or more processors 404 and a system memory 406. A memory bus 408 may be used for communicating between processor 404 and system memory 406.
Depending on the desired configuration, processor 404 may be of any type including but not limited to a microprocessor (μP), a microcontroller (μC), a digital signal processor (DSP), or any combination thereof. Processor 404 may include one more levels of caching, such as a level one cache 410 and a level two cache 412, a processor core 414, and registers 416. An example processor core 414 may include an arithmetic logic unit (ALU), a floating point unit (FPU), a digital signal processing core (DSP Core), or any combination thereof. An example memory controller 418 may also be used with processor 404, or in some implementations memory controller 418 may be an internal part of processor 404.
Depending on the desired configuration, system memory 406 may be of any type including but not limited to volatile memory (such as RAM), non-volatile memory (such as ROM, flash memory, etc.) or any combination thereof. System memory 406 may include an operating system 420, one or more applications 422, and program data 424. Application 422 may include a battery implementation algorithm 426 that is arranged to perform the functions as described herein including those described with respect to system 100 of FIG. 1. Program data 424 may include battery implementation data 428 that may be useful for implementing a battery as is described herein. In some embodiments, application 422 may be arranged to operate with program data 424 on operating system 420 such that implementing a battery may be provided. This described basic configuration 402 is illustrated in FIG. 4 by those components within the inner dashed line.
Computing device 400 may have additional features or functionality, and additional interfaces to facilitate communications between basic configuration 402 and any required devices and interfaces. For example, a bus/interface controller 430 may be used to facilitate communications between basic configuration 402 and one or more data storage devices 432 via a storage interface bus 434. Data storage devices 432 may be removable storage devices 436, non-removable storage devices 438, or a combination thereof. Examples of removable storage and non-removable storage devices include magnetic disk devices such as flexible disk drives and hard-disk drives (HDD), optical disk drives such as compact disk (CD) drives or digital versatile disk (DVD) drives, solid state drives (SSD), and tape drives to name a few. Example computer storage media may include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data.
System memory 406, removable storage devices 436 and non-removable storage devices 438 are examples of computer storage media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which may be used to store the desired information and which may be accessed by computing device 400. Any such computer storage media may be part of computing device 400.
Computing device 400 may also include an interface bus 440 for facilitating communication from various interface devices (e.g., output devices 442, peripheral interfaces 444, and communication devices 446) to basic configuration 402 via bus/interface controller 430. Example output devices 442 include a graphics processing unit 448 and an audio processing unit 450, which may be configured to communicate to various external devices such as a display or speakers via one or more A/V ports 452. Example peripheral interfaces 444 include a serial interface controller 454 or a parallel interface controller 456, which may be configured to communicate with external devices such as input devices (e.g., keyboard, mouse, pen, voice input device, touch input device, etc.) or other peripheral devices (e.g., printer, scanner, etc.) via one or more I/O ports 458. An example communication device 446 includes a network controller 460, which may be arranged to facilitate communications with one or more other computing devices 462 over a network communication link via one or more communication ports 464.
The network communication link may be one example of a communication media. Communication media may typically be embodied by computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media. A “modulated data signal” may be a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. By way of example, and not limitation, communication media may include wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, radio frequency (RF), microwave, infrared (IR) and other wireless media. The term computer readable media as used herein may include both storage media and communication media.
Computing device 400 may be implemented as a portion of a small-form factor portable (or mobile) electronic device such as a cell phone, a personal data assistant (PDA), a personal media player device, a wireless web-watch device, a personal headset device, an application specific device, or a hybrid device that include any of the above functions. Computing device 400 may also be implemented as a personal computer including both laptop computer and non-laptop computer configurations.
The present disclosure is not to be limited in terms of the particular embodiments described in this application, which are intended as illustrations of various aspects. Many modifications and variations can be made without departing from its spirit and scope, as will be apparent to those skilled in the art. Functionally equivalent methods and apparatuses within the scope of the disclosure, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing descriptions. Such modifications and variations are intended to fall within the scope of the appended claims. The present disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to embodiments containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.
As will be understood by one skilled in the art, for any and all purposes, such as in terms of providing a written description, all ranges disclosed herein also encompass any and all possible subranges and combinations of subranges thereof. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, tenths, etc. As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, etc. As will also be understood by one skilled in the art all language such as “up to,” “at least,” “greater than,” “less than,” and the like include the number recited and refer to ranges which can be subsequently broken down into subranges as discussed above. Finally, as will be understood by one skilled in the art, a range includes each individual member. Thus, for example, a group having 1-3 cells refers to groups having 1, 2, or 3 cells. Similarly, a group having 1-5 cells refers to groups having 1, 2, 3, 4, or 5 cells, and so forth.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

## Claims

1. A battery, comprising:
a first electrode, wherein the first electrode includes a tantalum vanadium boron component and wherein the first electrode is effective to react with oxygen to produce at least one electron;
a second electrode; and
an insulator between the first electrode and the second electrode.

2. The battery as recited in claim 1, wherein the tantalum vanadium boron component is coated at least partially with indium tin oxide.

3. The battery as recited in claim 1, wherein the tantalum vanadium boron component is disposed on a substrate and wherein the substrate is at least partially coated with indium tin oxide.

4. The battery as recited in claim 3, wherein the indium tin oxide includes a product of annealment of In2O3 and SnO2.

5. The battery as recited in claim 1, wherein the tantalum vanadium boron component includes a vanadium metal and/or a vanadium oxide.

6. The battery as recited in claim 1, wherein the tantalum vanadium boron component includes a tantalum metal and/or a tantalum oxide.

7. The battery as recited in claim 1, wherein the tantalum vanadium boron component includes boron or a boron oxide.

8. The battery as recited in claim 1, wherein amounts of tantalum, vanadium, and boron in the tantalum vanadium boron component are in a ratio of from 1:1:4 to 3:3:6 respectively.

9. The battery as recited in claim 1, wherein the tantalum vanadium boron component includes TaVB2.