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Journal of Semiconductors 2023年第9期44卷 1-2页

作者： Hoi-Sing Kwok Zhiyong Fan Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina state key laboratory of advanced displays and optoelectronics technologies HKUSTClear Water BayKowloonHong Kong SARChina

This year marks the tenth anniversary of the state key laboratory of advanced displays and optoelectronics technologies(SKLADOT)at the Hong Kong University of Science and Technology(HKUST).The predecessor of SKLADOT w... 详细信息

关键词： ADO key UST

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镉合金化对溶液法制备CZTSSe太阳电池的影响:形貌、能带排列和效率提高（英文）

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Science China Materials 2025年

作者：郑媛元相春旭龚元才李沂泽肖仕梁郭浩宇马乘风王少荧闫伟博黄维辛颢 state key laboratory for Organic Electronics and Information displays Institute of Advanced Materials Nanjing University of Posts & Telecommunications

锌黄锡矿结构的Cu2ZnSn（S,Se）4（CZTSSe）薄膜太阳能电池因其理论效率高、地球丰富且低毒性的元素组成而被认为是可持续光伏应用的有前景的候选者.然而,其性能受到CuZn反位缺陷及相关缺陷簇的制约,因为这些缺陷会造成有害的能带拖尾...

锌黄锡矿结构的Cu2ZnSn（S,Se）4（CZTSSe）薄膜太阳能电池因其理论效率高、地球丰富且低毒性的元素组成而被认为是可持续光伏应用的有前景的候选者.然而,其性能受到CuZn反位缺陷及相关缺陷簇的制约,因为这些缺陷会造成有害的能带拖尾和非辐射复合.用具有较大离子半径的Cd替代Zn已被证明能有效抑制非辐射复合,最高可实现11.73%的效率.然而,Cd合金化对CZTSSe电池吸收层形貌、电学性能和器件性能的影响尚未得到充分研究.在本工作中,采用Cu+-Sn4+-DMSO溶液体系,我们成功地在全浓度范围内将Cd2+引入到CZTSSe晶格中,系统地研究了Cd合金化的作用.结果表明,Cd合金化促进了晶粒生长,在低浓度时能得到平整紧密的吸收层薄膜,但在高浓度时则出现过度晶粒生长.此外,低Cd含量能够抑制晶格无序,从而减少能带拖尾Cd的掺入可以通过提高价带顶和降低导带底来线性降低带隙,从而增加异质结的导带偏移（CBO）,但在低Cd含量（<50%）时仍保持相对理想的值（<0.3 eV）.特别是在Cd合金化浓度为5%时,CZTSSe太阳能电池实现了13.31%的最佳效率（无减反层）,相较于未合金化的原始器件性能提高了超过7.0%,这归功于改善的薄膜性能、理想的CBO （<0.24 eV）和界面复合的有效抑制.然而,高浓度Cd合金化可能会导致吸收层薄膜质量变差,出现大量空洞,而且在50%Cd合金化时,晶体结构从锌黄锡矿结构转变为黄锡矿结构,导致器件性能显著恶化.

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Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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Science China Chemistry 2025年

作者： Yuan Tian Jiang-Bo Chen Jie Ying Ge Tian Yu-Xuan Xiao Yi Lu Si-Ming Wu Wei Geng Ling Shen Xiao-Yu Yang state key laboratory of advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy key laboratory for New Hydrogen-Ammonia Energy technologies Foshan Xianhu laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

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Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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Nano-Micro Letters 2025年第1期17卷 281-292页

作者： Xing Wang Wei Pi Sheng Hu Haifeng Bao Na Yao Wei Luo state key laboratory of New Textile Materials and advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University state key laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences laboratory of Physical-Chemical technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus state key laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Activation energy

Boosting aqueous nickel-zinc battery stability with bimetallic ion-integrated 1D metal-organic nanowires

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Science China Chemistry 2025年

作者： Yihao Chen Jin Liang Yichun Su Guoyin Zhu Hengyue Xu Hongye Ding Guangxun Zhang Dianheng Yu Zizhou Shen Yizhou Zhang Wei Huang Huan Pang School of Chemistry and Chemical Engineering Yangzhou University key laboratory of Flexible Electronics (KLoFE) & Institute of advanced Materials (IAM) School of Flexible Electronics (Future Technologies) Nanjing Tech University (NanjingTech) Institute of advanced Materials and Flexible Electronics (IAMFE) School of Chemistry and Materials Science Nanjing University of Information Science & Technology Department of Chemistry Tsinghua University state key laboratory of Coordination Chemistry Nanjing University

Limited by low conductivity,designing cathode materials with excellent electron transfer efficiency for high-performance nickel-zinc batteries （NZBs） remains *** this study,a series of bimetallic metal-organic nanowires were fabricated by doping M ions in NiNTA,resulting in NiMNTA (M=Mg2+,Mn2+,Co2+,Zn2+,Ag+),and NixCo6-xNTA （x=1,2,3,4,5）.The proportions and types of metal ions can be modified without altering the initial coordination structure.X-ray absorption fine structure spectroscopy （XAFS） revealed that only M–O bonds,not metal bonds,were present in the *** performance of Ni2Co4NTA as the cathode for aqueous NZBs was significantly improved,achieving the maximum energy density of 279.17Wh kg-1with the high cycle stability （retention rate of 72.0%after 1,000 cycles）.The flexible Ni2Co4NTA//Zn@carbon cloth battery employing gel electrolyte also exhibits the excellent Coulombic efficiency of 96%after 350 *** approach shows considerable potential for designing one-dimensional materials with bimetallic modifications,providing new strategies for developing cathode materials for NZBs with high specific capacity and cycle stability.

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High-performance transparent graphene-based antennas

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Science China Technological Sciences 2025年

作者： Chaoye HONG Lusong WEI Weijia WANG Youmei TANG Qinghai ZHU Jiangtao HUANGFU Mingsheng XU College of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University College of Information Science and Electronic Engineering Zhejiang University

With the continuous development of wireless communication technology, applications in the military, aerospace,and vehicle wireless communication sectors have demanded miniaturized and aesthetically pleasing antennas. Transparent antennas, which combine the advantages of optical and radio-frequency(RF) technologies, have become a popular research topic. However, existing transparent antennas often suffer from complex preparation processes, fragile materials, poor conductivity, and low optical transmittance. Here, we develop hybrid conductive thin films using graphene and silver nanowires,achieving a transmittance of 86% and a sheet resistance of 7.8 Ω/sq with high environmental stability. We demonstrate the suitability of this nanocomposite in two applications: a transparent ultrahigh-frequency RF-identification tag folded dipole antenna and a transparent X-band microwave half-wave dipole antenna. These antennas offer high gain, high radiation efficiency, and small size, indicating that transparent graphene-based antennas have remarkable potential for intelligent information sensor systems.

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Polybenzimidazolium-reinforced polyimide separators to inhibit dendrites for high-security lithium-ion batteries

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Science China Chemistry 2025年

作者： Guohua Sun Jiaqi Cui Qingsong Zhang Yisong Zhou Xinluo Li Yingying Zhang Zhanao Zhang Xin Zhang Jiantao Fan Pengpeng Li Lianlong Hou Nanjun Chen Hebei key laboratory of Flexible Functional Materials School of Materials Science and Engineering Hebei University of Science and Technology state key laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Academy for advanced Interdisciplinary Studies Southern University of Science and Technology state key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University

Lithium dendrite formation poses a significant safety hazard in lithium-ion batteries（LIBs）, severely impeding their widespread adoption and further technological advancements. Here, we present a novel quaternized polybenzimidazolium（q-PBI） to armor polyimide（PI） nanofiber separator（q-PBI@PI）, in which the q-PBI containing lithiophilicity and anionphilicity sites serves as the multifunctional nano-layers to suppress the Li dendrite and reinforce the mechanical properties of PI nanofiber ***, the q-PBI@PI separator displays an unprecedented mechanical strength of 82.8 MPa, significantly outperforming previously reported PI nanofiber membranes（typically below 50.0 MPa）. Besides, we demonstrate that the q-PBI@PI separator simultaneously possesses low nucleation overpotential（59 mV） and exceptional average coulombic efficiency due to the suppression of Li dendrite. Importantly, q-PBI@PI-based Li||Li battery enables a stable Li plating-stripping at 1.0 m A cm-2for600 h. Attributing to these exceptional merits, the armored PI separator-based LIBs display remarkable specific capability and capacity retention. The density function theory calculations reveal that q-PBI is conducive to the desolvation of Li+and can immobilize Li+and PF6-ions near affinity sites of PI nanofibers for inhibiting the formation of Li dendrites. Our work paves a new avenue for the design of next-generation high-performing separators in LIBs.

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Kerr effect and Kerr constant enhancement in vertically aligned deformed helix ferroelectric liquid crystals

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Chinese Physics B 2016年第9期25卷 9-12页

作者： Liangyu Shi Abhishek Kumar Srivastava Vladimir G Chigrinov Hoi-Sing Kwok state key laboratory on advanced displays and optoelectronics technologies Hong Kong University of Science and Technology

In this article,we review recently achieved Kerr effect progress in novel liquid crystal（LC） material：vertically aligned deformed helix ferroelectric liquid crystal（VADHFLC）.With an increasing applied electric field,the induced inplane birefringence of LCs shows quadratic *** theoretical calculations and experimental details are *** an enhanced Kerr constant to 130 nm/V2,this VADHFLC cell can achieve a 2π modulation by a small efficient electric field with a fast response around 100 μs and thus can be employed in both display and photonics devices.

关键词： Kerr effect deformed helix ferroelectric liquid crystal phase modulation of light

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埋底界面增韧助力实现机械稳定和高效的宽带隙柔性钙钛矿太阳能电池（英文）

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Science China Materials 2025年

作者：曹建磊陈炜杰赵晨荔徐佳诚郑佳磊亢帅青朱娟章建东李耀文 laboratory of advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices College of Chemistry Chemical Engineering and Materials Science Soochow University state and Local Joint Engineering laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu key laboratory of advanced Negative Carbon technologies Soochow University

柔性宽带隙钙钛矿太阳能电池具有构筑高效叠层太阳能电池的独特优势.具有低温加工和优异稳定性的氧化镍是制备柔性宽带隙钙钛矿太阳能电池的理想空穴传输层.然而,钙钛矿埋底界面存在大量缺陷以及氧化镍和钙钛矿界面结合力较弱,严重影响...

柔性宽带隙钙钛矿太阳能电池具有构筑高效叠层太阳能电池的独特优势.具有低温加工和优异稳定性的氧化镍是制备柔性宽带隙钙钛矿太阳能电池的理想空穴传输层.然而,钙钛矿埋底界面存在大量缺陷以及氧化镍和钙钛矿界面结合力较弱,严重影响了柔性器件的效率和机械稳定性.我们通过引入多功能分子N-乙酰-L-谷氨酸(NALG)开发了一种埋底界面修饰策略来解决上述问题.理论计算和实验结果表明NALG分子的羧基和酰胺可以分别与氧化镍和钙钛矿结合,能够钝化界面缺陷以及增强钙钛矿的结晶.更重要的是, NALG作为桥连分子大幅增强氧化镍和钙钛矿的界面韧性.最终,柔性宽带隙钙钛矿太阳能电池实现了16.28%的能量转化效率.同时,柔性器件表现出优异的机械稳定性,循环弯曲10000次仍能保持初始效率的83%(弯曲半径为5 mm).器件也具有优越的长期运行稳定性和湿热稳定性.

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