bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optically Transparent and Mechanically Robust Ionic Hydrogel Electrodes for Bright Electroluminescent Devices Achieving High Stretchability Over 1400%
Authors: Go Yeonjeong , Park Ho‐Yeol , Zhu Yijie , Yoo Kiyoung , Kwak Jeonghun , Jin Sung‐Ho , Yoon Jinhwan 
Published: April 2023

AbstractTo realize wearable displays and interactive soft robots, significant research efforts are focused on developing highly deformable alternating‐current electroluminescent (ACEL) devices. Although soft emission layers are well developed, designing stretchable, conductive, and transparent soft electrodes remains challenging. In this study, ionic hydrogels are prepared comprising a double network (DN) of poly(N‐hydroxyethylacrylamide‐co‐acrylamide)/crosslinked chitosan swollen in aqueous lithium bis(trifluoromethanesulfonyl) imide. Owing to the finely tuned DN structure of the polymeric crosslinker and transparent electrolyte, the developed ionic hydrogels exhibit remarkable stretchability (1400%), excellent optical transmittance (>99%), and high conductivity (1.95 × 10−2 Sm−1). Based on the high performance of the ionic hydrogels, ACEL devices are fabricated with an emission layer containing phosphor microparticles and demonstrate stable, high luminance under extreme deformation, and ultra‐high elongation. The excellent transparency of the ionic hydrogel further enables the fabrication of novel soft ACEL devices with tandem structures by stacking several emission and electrode layers, in which each emission layer is independently controlled with a switch circuit.
Enhanced Cycling Stability of 4.6 V LiCoO2 Cathodes by Inhibiting Catalytic Activity of its Interface Via MXene Modification
Authors: Sun Chao , Zhao Bing , Mao Jing , Dai Ke‐Hua , Wang Zhen‐yu , Tang Lin‐bo , Chen He‐zhang , Zhang Xia‐hui , Zheng Jun‐chao 
Published: April 2023

AbstractLiCoO2 plays a key role in energy storage devices due to its high energy density. And the volumetric energy density of LiCoO2 cathode can be significantly improved by increasing the charging cut‐off voltage to 4.6 V. However, the increase in resistance at the LiCoO2 interface, and the damage to the LiCoO2 from the outside to the inside by the HF generated that caused by the decomposition of the organic electrolyte and LiPF6 under 4.6 V conditions are not conducive to structural stability during cycling. Here, it is shown that the decomposition of electrolyte and LiPF6 is effectively mitigated by inhibiting the interfacial catalytic activity of LiCoO2 using an atomically thin layer of MXenes as a interlayer. Density functional theory results suggest that the decomposition energy of LiPF6 is 1.13 and 3.21 eV at the interface of LiCoO2 and MXenes, respectively. Time of Flight Secondary Ion Mass Spectrometry results further indicate that the decomposition products of the organic electrolyte and LiPF6 have a thinner thickness at the interface of MXenes (5 nm) than LiCoO2 (10 nm). This study provides a new and universal strategy for stabilizing the cathode interface to support the development of high energy density lithium‐ion batteries.
Carbon Black‐Supported Single‐Atom CoNC as an Efficient Oxygen Reduction Electrocatalyst for H2O2 Production in Acidic Media and Microbial Fuel Cell in Neutral Media
Authors: Du Ying‐Xia , Yang Qiao , Lu Wang‐Ting , Guan Qing‐Yu , Cao Fei‐Fei , Zhang Geng 
Published: April 2023

AbstractSingle metal atom isolated in nitrogen‐doped carbon materials (MNC) are effective electrocatalysts for oxygen reduction reaction (ORR), which produces H2O2 or H2O via 2‐electron or 4‐electron process. However, most of MNC catalysts can only present high selectivity for one product, and the selectivity is usually regulated by complicated structure design. Herein, a carbon black‐supported CoNC catalyst (CB@CoNC) is synthesized. Tunable 2‐electron/4‐electron behavior is realized on CB@Co‐N‐C by utilizing its H2O2 yield dependence on electrolyte pH and catalyst loading. In acidic media with low catalyst loading, CB@CoNC presents excellent mass activity and high selectivity for H2O2 production. In flow cell with gas diffusion electrode, a H2O2 production rate of 5.04 mol h−1 g−1 is achieved by CB@CoNC on electrolyte circulation mode, and a long‐term H2O2 production of 200 h is demonstrated on electrolyte non‐circulation mode. Meanwhile, CB@CoNC exhibits a dominant 4‐electron ORR pathway with high activity and durability in pH neutral media with high catalyst loading. The microbial fuel cell using CB@CoNC as the cathode catalyst shows a peak power density close to that of benchmark Pt/C catalyst.
Self‐Adapting and Self‐Healing Hydrogel Interface with Fast Zn2+ Transport Kinetics for Highly Reversible Zn Anodes
Authors: Hong Lin , Wu Xiuming , Liu Yu‐Si , Yu Chunyang , Liu Yingchun , Sun Kaixi , Shen Chenyang , Huang Wei , Zhou Yongfeng , Chen Jie‐Sheng , Wang Kai‐Xue 
Published: April 2023

AbstractConstruction of polymer‐based artificial solid‐electrolyte interphase films on Zn metal anode holds great potential in the suppression of both dendrite growth and side reaction in rechargeable aqueous Zn‐ion batteries. However, the traditional polymer films suffer from the critical issues of sluggish Zn2+ transport kinetics and rigid interface. Herein, zinc alginate (ZA) hydrogel is designed and prepared as a dynamic interface and Zn2+ redistributor on Zn anode via in situ cross‐linking reaction. The zincophilic and negatively charged carboxyl groups of ZA promote the transport of Zn2+ ions along a “Z‐type” pathway, the repulsion of free SO42‐ anions, and the desolvation of Zn2+ ions, consequently leading to the homogeneous deposition of Zn and the effective suppression of side reaction. Additionally, the dynamic flexibility of ZA hydrogel endows the Zn anode with self‐adapting interface to accommodate the volume variation and repair the possible ruptures, thereby guaranteeing the long‐term cycling stability. Assisted by the ZA layer, the Zn anode achieves a prolonged lifespan over 2200 h without the formation of Zn dendrites and by‐products. Outstanding cycling stability is also demonstrated for the Zn anode when coupled with MnO2 cathode, further demonstrating its prospects for practical application.
Construction of Tri‐Functional HOFs Material for Efficient Selective Adsorption and Photodegradation of Bisphenol A and Hydrogen Production
Authors: Yang Liujun , Yuan Junwei , Wang Guan , Cao Qiang , Zhang Cheng , Li Miaomiao , Shao Junxia , Xu Yan , Li Hua , Lu Jianmei 
Published: April 2023

AbstractThis study proposes the construction of porous nanomaterial (HOFs@Fe3+) which anchors non‐noble metal ions Fe3+ onto nanoscale rod‐like hydrogen‐bonded organic frameworks (HOFs) by electrostatic and coordination interactions. The high specific surface area and the abundance of hydrogen‐bond adsorption active sites in pore structure of HOFs@Fe3+ facilitate strong interactions with the double OH in bisphenol A (BPA), resulting in the highest saturation adsorption of BPA that has been reported so far (452 mg g‐1). In addition, the ordered conjugate stacking framework structure and hydrogen bond of HOFs@Fe3+ and the variable valence properties of Fe3+ create new pathways for efficient separation of photogenerated carriers. The results show that HOFs@Fe3+ can completely adsorb and photodegrade 50 ppm BPA within 20 min, owing to the abundant hydrogen bond that acts both as adsorption sites to accelerate the mass transfer process and as catalytic sites to ensure adsorption and photodegradation can be matched synergistically. Meanwhile, the efficiency of photocatalytic H2 production by HOFs@Fe3+ reaches 21.55 mmol g‐1 h‐1 with non‐noble metal Fe3+ as co‐catalyst. This tri‐functional material with high adsorption capacity, high photodegradation efficiency, and high photocatalytic H2 production activity can be successfully used to solve the long‐standing conflict between environment and energy.
Transient and in situ Growth of Nanostructured SiC on Carbon Fibers toward Highly Durable Catalysis
Authors: Zhang Hao , Ouyang Qin , Yu Lanlan , Hu Rong , Wan Jun , Song Bo , Huang Qing , Yao Yonggang 
Published: April 2023

AbstractCarbon is ubiquitously used as catalyst supports in various clean energy technologies, particularly emerging electrocatalysis, yet it often suffers slow oxidation and corrosion along with performance degradation. The harmonious combination of refractory silicon carbide (SiC, chemically inert) with carbon is alluring but often a great challenge, particularly to achieve desirable nanostructures and strong interfaces. Herein, a shockwave‐type transient heating is designed (> 1750 °C for 1 s per pulse) for controllable growth of conformal SiC coating and massive SiC nanowires on carbon fibers (denoted as CF/SiC‐NW), which serves as a high surface area and durable support for catalysis under harsh environments. The transient heating in SiO vapor triggers in situ transformation of the carbon surface into a seamless SiC protective layer, while the following fast cooling is essential for the growth of numerous self‐assembled SiC nanowires. The CF/SiC‐NW exhibits excellent structural stability in the air at high temperatures, in concentrated acidic/alkaline solutions after electrochemical stressing for 2000 cycles, and in oxygen evolution reaction after 10 h of continuous operation. This strategy enables delicate structure control in refractory carbides and is also general for various carbon/carbide functional materials (e.g., C/TiC, C/WC) for electro‐ or electrified catalysis under harsh conditions.
High Performance BiSbTe Alloy for Superior Thermoelectric Cooling
Authors: Sun Yuxin , Wu Hao , Dong Xingyan , Xie Liangjun , Liu Zihang , Liu Ruiheng , Zhang Qian , Cai Wei , Guo Fengkai , Sui Jiehe 
Published: April 2023

AbstractAt present, the weak thermoelectric and mechanical performance of zone‐melting bismuth telluride alloys cannot support the further improvement of cooling and processing performance of semiconductor refrigeration devices. Here, MnO2 is added into high‐strength Bi0.4Sb1.6Te3 prepared by ball milling method to optimize its thermoelectric transport properties. Via in situ reaction, Sb2O3 nano‐precipitates are formed in the matrix, which also leads to the surplus of Te element. As results, the donor‐like effect is suppressed, thereby increasing carrier concentration and power factor. Besides, volatilization of Te‐rich phases during sintering leaves plentiful nanopores, which together with Sb2O3 nano‐precipitates significantly decrease the lattice thermal conductivity. Eventually, the maximum ZT reaches 1.43 at 75 °C for the Bi0.4Sb1.6Te3+0.01MnO2 sample. On this basis, a 31‐pairs module made of the material and commercial n‐type BiTeSe produces large temperature differences (ΔT) of 70.1, 80.8, and 89.4 K at the hot‐side temperature (Th) of 300, 325, and 350 K respectively, which are highly competitive. The maximum coefficient of performance of 8.6 and cooling capacity of 7 W are achieved when Th is set as 325 K. This excellent progress will promote the further development of bismuth telluride refrigeration modules.
Retina‐Inspired Artificial Synapses with Ultraviolet to Near‐Infrared Broadband Responses for Energy‐Efficient Neuromorphic Visual Systems
Authors: Zhang Junyao , Guo Pu , Guo Ziyi , Li Li , Sun Tongrui , Liu Dapeng , Tian Li , Zu Guoqing , Xiong Lize , Zhang Jianhua , Huang Jia 
Published: April 2023

AbstractNeuromorphic visual system with image perception, memory, and preprocessing functions is expected to simulate basic features of the human retina. Organic optoelectronic synaptic transistors emulating biological synapses may be promising candidates for constructing neural morphological visual system. However, the sensing wavelength range of organic optoelectronic synaptic transistors usually limits their potential in artificial multispectral visual perception. Here, retina‐inspired optoelectronic synaptic transistors that present broadband responses covering ultraviolet, visible, and near‐infrared regions are demonstrated, which leverage the wide‐range photoresponsive charge trapping layer and the heterostructure formed between PbS quantum dots and organic semiconductor. Simplified neuromorphic visual arrays are developed to simulate comprehensive image perception, memory, and preprocessing functions. Benefitting from the flexibility of the charge trapping and organic semiconductor layers, a flexible neuromorphic visual array can be fabricated, having an ultralow power consumption of 0.55 fJ per event under a low operating voltage of −0.01 V. More significantly, an accelerating image preprocessing effect can be observed in a wide wavelength range even beyond the perception range of the human visual system, due to the gate‐adjustable synaptic plasticity. These devices are highly promising for implementing neuromorphic visual systems with broadband perception, increasing image processing efficiency, and promoting the development of artificial vision.
A Quenched Double‐Hydrophilic Coating for the Enhancement of Water Retention of Hydrogels
Authors: Gao Weicheng , Chang Jie , Li Xueping , Li Sidi , Zhou Yuwei , Hou Xin , Long Lixia , Zhao Jin , Yuan Xubo 
Published: April 2023

AbstractWith the emergence of various hydrogels with excellent functions, the air‐drying of hydrogels has attracted extensive attention. Improving the water retention capacity is critical in the application of hydrogels. Herein, inspired by the dense aggregation structure of natural hydrophilic macromolecules, hydrophilic substances (gelatin and glycerol) are first applied to enhance the water retention capacity of hydrogels by constructing a quenched double‐hydrophilic coating. The weight retention ratio of the modified hydrogels is increased to 72.5% at 25 °C and 40 RH% after 5 days. Furthermore, the construction of hydrophilic coating on the surface does not affect the mechanical properties, and the modified hydrogels still retain strong water retention capacity after loading. In addition, this approach is applicable to hydrogels with different shapes and types, and various materials can be selected. Therefore, the proposed method provides new insights for expanding the application scope and service life of hydrogels.
Van Der Waals Heterojunction Modulated Charge Collection for H2O2 Production Photocathode
Authors: Zhang Zemin , Chen Xu , Hao Rui , Feng Qingliang , Xie Erqing 
Published: April 2023

AbstractEfficient photocarrier generation and collection are highly desirable for solar‐fuel conversion systems. However, the latter is challenging for many photoelectrodes due to carrier losses happening in the semiconductor‐electrolyte interface and the semiconductor‐substrate interface. To overcome it, a novel Au/CuBi2O4 (CBO)/PtSe2 van der Waals heterojunction photocathode has been developed to boost photocarrier collection. As a result, the ohmic contact at Au/CBO interface shows a low resistance for hole transfer. Meanwhile, while promoting electron transfer, the Van der Waals heterojunction of CBO/PtSe2 interface with energy barrier‐blocked holes. Concurrently, the composite photocathode exhibits significantly enhanced performance: a photocurrent of −0.59 mA cm−2 at 0.5 V versus reversible hydrogen electrode and an H2O2 generation rate of 2.39 mol (Lhm2)−1. This work demonstrates the charge regulation role of Van der Waals heterojunctions in the solar‐fuel system. More broadly, Van der Waals heterojunctions provide an excellent bond‐free approach to creating versatile optoelectronic devices.
An Automation Workflow for High‐Throughput Manufacturing and Analysis of Scaffold‐Supported 3D Tissue Arrays
Authors: Cao Ruonan , Li Nancy T. , Latour Simon , Cadavid Jose L. , Tan Cassidy M. , Forman Ari , Jackson Hartland W. , McGuigan Alison P. 
Published: April 2023

AbstractPatient‐derived organoids have emerged as a useful tool to model tumour heterogeneity. Scaling these complex culture models while enabling stratified analysis of different cellular sub‐populations, however, remains a challenge. One strategy to enable higher throughput organoid cultures is the scaffold‐supported platform for organoid‐based tissues (SPOT). SPOT allows the generation of flat, thin, and dimensionally‐defined microtissues in both 96‐ and 384‐well plate footprints that are compatible with longitudinal image‐based readouts. SPOT is currently manufactured manually, however, limiting scalability. In this study, an automation approach to engineer tumour‐mimetic 3D microtissues in SPOT using a liquid handler is optimized and comparable within‐ and between‐sample variation to standard manual manufacturing is shown. Further, a liquid handler‐supported cell extraction protocol to support single‐cell‐based end‐point analysis using high‐throughput flow cytometry and multiplexed cytometry by time of flight is developed. As a proof‐of‐value demonstration, 3D complex tissues containing different proportions of tumour and stromal cells are generated to probe the reciprocal impact of co‐culture. It is also demonstrated that primary patient‐derived organoids can be incorporated into the pipeline to capture patient‐level tumour heterogeneity. It is envisioned that this automated 96/384‐SPOT workflow will provide opportunities for future applications in high‐throughput screening for novel personalized therapeutic targets.
A Photo‐Activated Thermoelectric Catalyst for Ferroptosis‐/Pyroptosis‐Boosted Tumor Nanotherapy
Authors: Jiang Xiaoyan , Yang Muyue , Fang Ying , Yang Zhenyu , Dai Xinyue , Gu Ping , Feng Wei , Chen Yu 
Published: April 2023

AbstractPhototherapy including photothermal therapy (PTT) and photodynamic therapy (PDT) has gradually come into the limelight for oncological treatment due to its noninvasiveness, high specificity, and low side effects. However, upregulated heat‐shock proteins (HSPs) and reactive oxygen species (ROS)‐defensing system such as glutathione (GSH) or MutT homolog 1 (MTH1) protein in tumor microenvironment counteract the efficiency of single‐modality therapy either PTT or PDT. Herein, the well‐defined bismuth telluride nanoplates (Bi2Te3 NPs) are engineered with a high‐performance photo‐thermo‐electro‐catalytic effect for tumor‐synergistic treatment. Upon near‐infrared light illumination, Bi2Te3 NPs induce a significant temperature elevation for PTT, which effectively inhibits MTH1 expression. Especially, heating and cooling alteration caused temperature variations result in electron–hole separation for ROS generation, which not only damages HSPs to reduce the thermotolerance for enhance PTT, but also arouses tumor cell pyroptosis. Additionally, Bi2Te3 NPs conspicuously reduce GSH, further improving ROS level and leading to decrease glutathione peroxidase 4 (GPX4) activity, which triggers tumor cell ferroptosis. Due to the photo‐thermo‐electro‐catalytic synergistic therapy, Bi2Te3 NPs are gifted with impressive tumor suppression on both ectopic and orthotopic ocular tumor models. This work highlights a high‐performance multifunctional energy‐conversion nanoplatform for reshaping tumor microenvironment to boost the tumor‐therapeutic efficacy of phototherapy.
Electrochemical Doping in Ordered and Disordered Domains of Organic Mixed Ionic–Electronic Conductors
Authors: Cavassin Priscila , Holzer Isabelle , Tsokkou Demetra , Bardagot Olivier , Réhault Julien , Banerji Natalie 
Published: April 2023

AbstractConjugated polymers are increasingly used as organic mixed ionic–electronic conductors in electrochemical applications for neuromorphic computing, bioelectronics, and energy harvesting. The design of efficient electrochemical devices relies on large modulations of the polymer conductivity, fast doping/dedoping kinetics, and high ionic uptake. In this work, structure–property relations are established and control of these parameters by the co‐existence of order and disorder in the phase morphology is demonstrated. Using in situ time‐resolved spectroelectrochemistry, resonant Raman, and terahertz (THz) conductivity measurements, the electrochemical doping in the different morphological domains of poly(3‐hexylthiophene) (P3HT) is investigated. The main finding is that bipolarons are found preferentially in disordered polymer regions, where they are formed faster and are thermodynamically more favored. On the other hand, polarons show a preference for ordered domains, leading to drastically different bipolaron/polaron ratios and doping/dedoping dynamics in the distinct regions. A significant enhancement of the electronic conductivity is evident when bipolarons start forming in the disordered regions, while the presence of bipolarons in the ordered regions is detrimental for transport. This study provides significant advances in the understanding of the impact of morphology on the electrochemical doping of conjugated polymers and the induced increase in conductivity.
Surface Ligand Engineering Ruthenium Nanozyme Superior to Horseradish Peroxidase for Enhanced Immunoassay
Authors: Fan Huizhen , Zheng Jiajia , Xie Jiaying , Liu Juewen , Gao Xingfa , Yan Xiyun , Fan Kelong , Gao Lizeng 
Published: April 2023

AbstractNanozymes have great potential to be used as an alternative to natural enzymes in a variety of fields. However, low catalytic activity compared with natural enzymes limits their practical use. It is still challenging to design nanozymes comparable to their natural counterparts in terms of the specific activity. In this study, a surface engineering strategy is employed to improve the specific activity of Ru nanozymes using charge‐transferrable ligands such as polystyrene sulfonate (PSS). PSS‐modified Ru nanozyme exhibits a peroxidase‐like specific activity of up to 2820 U mg−1, which is twice that of horseradish peroxidase (1305 U mg−1). Mechanism studies suggest that PSS readily accepts negative charge from Ru, thus reducing the affinity between Ru and ·OH. Importantly, the modified Ru‐peroxidase nanozyme is successfully used to develop an immunoassay for human alpha‐fetoprotein and achieves a 140‐fold increase in detection sensitivity compared with traditional horseradish‐peroxidase‐based enzyme‐linked immunosorbent assay. Therefore, this work provides a feasible route to design nanozymes with high specific activity that meets the practical use as an alternative to natural enzymes.
A Composite of Hierarchical Porous MOFs and Halloysite Nanotubes as Single‐Ion‐Conducting Electrolyte Toward High‐Performance Solid‐State Lithium‐Ion Batteries
Authors: Tao Fencheng , Wang Xin , Jin Sheng , Tian Li , Liu Zixin , Kang Xiaomin , Liu Zhiliang 
Published: April 2023

AbstractMetal–organic frameworks (MOFs), as a promising rechargeable electrochemical energy storage material have emerged in the field of solid‐state lithium batteries. However, low ionic conductivity and high interfacial impedance still severely hamper the application of MOF‐based solid‐state electrolytes (SSE). In this work, a novel hierarchical porous H‐ZIF‐8 solid‐state electrolyte (SSE) material is harvested through the in situ growth of zinc nitrate hydroxide nanosheets, expressing excellent ion conductivity of 1.04 × 10−3 S cm−1 and Li+‐transference number of 0.71. Moreover, the morphology and structure of H‐ZIF‐8 is further optimized to obtain a composite H‐ZIF‐8/HNT by decorating halloysite nanotubes (HNT). Notably, functionalized H‐ZIF‐8/HNT as an electrolyte presents obvious enhancement on electrochemical properties: higher ionic conductivity of 7.74 × 10−3 S cm−1, better single‐ion transmittability ( = 0.84), good interfacial compatibility as well as excellent rate performance. More importantly, the Li/LiFePO4 battery equipped with H‐ZIF‐8/HNT SSE has efficient lithium‐dendrite suppression and up to 84% capacity retention (104.16 mA h g−1) after 200 times galvanostatic charge/discharge cycles. This work enriches the solid‐state lithium‐ion composite electrolyte materials, opening an entirely new way for enhancing electrochemical performance.