封面： 厦门大学韩联欢课题组提出利用电化学溴化结合光刻图案化制备石墨烯电子器件，揭示了溴化程度与电子传输特性的关系，为其在微电子领域的应用提供基础。（文献号2305251）
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马俊博, 林生, 林志群, 孙岚, 林昌健. 太阳能光（电）催化固氮研究进展[J]. 电化学（中英文）, 2024, 30(3): 2314003.
Ma Jun-Bo, Lin Sheng, Lin Zhiqun, Sun Lan, Lin Chang-Jian. Recent Advances in Solar Photo(electro)catalytic Nitrogen Fixation[J]. Journal of Electrochemistry, 2024, 30(3): 2314003.
DOI: 10.61558/2993-074X.3443
Ammonia (NH3) is an essential chemical in modern society. It is currently produced in industry by the Haber-Bosch process using H2 and N2 as reactants in the presence of iron-based catalysts at high-temperature (400-600 °C) and extremely highpressure (20-40 MPa) conditions. However, its efficiency is limited to 10% to 15%. At the same time, a large amount of energy is consumed, and CO2 emission is inevitably. The development of a sustainable, clean, and environmentally friendly energy system represents a key strategy to address energy crisis and environmental pollution, ultimately aiming to achieve carbon neutrality. Within this framework, semiconductor photocatalytic nitrogen fixation leverages green and pollution-free solar energy to produce NH3 — an essential chemical raw material. This innovative process offers a sustainable alternative to the conventional chemical NH3 production method that involves tremendous energy consumption and environmental pollution. Herein, this review provides a comprehensive overview of the photo(electroc)catalytic nitrogen fixation reaction, covering influencing factor, experimental equipment of photocatalysis, electrocatalysis and photoelectrocatalysis, characteristics, and reaction mechanism. Particularly, recent advances in semiconductor photocatalyst, photo(electro)catalytic nitrogen fixation system, and photo(electro)catalytic nitrogen fixation mechanism are discussed. Future research directions in solar photo(electro)catalytic nitrogen fixation technology are also outlined.刘晨希, 邹泽萍, 胡梅雪, 丁宇, 谷宇, 刘帅, 南文静, 马溢昌, 陈招斌, 詹东平, 张秋根, 庄林, 颜佳伟, 毛秉伟. 电极/碱性聚电解质界面的微分电容曲线和零电荷电位测定[J]. 电化学（中英文）, 2024, 30(3): 2303151. Liu Chen-Xi, Zou Ze-Ping, Hu Mei-Xue, Ding Yu, Gu Yu, Liu Shuai, Nan Wen-Jing, Ma Yi-Chang, Chen Zhao-Bin, Zhan Dong-Ping, Zhang Qiu-Gen, Zhuang Lin, Yan Jia-Wei, Mao Bing-Wei. The Determination of PZC and differential Capacitance Curve of Platinum-Alkaline Polymer Electrolyte Interfaces[J]. Journal of Electrochemistry, 2024, 30(3): 2303151.
DOI: 10.13208/j.electrochem.2303151
Alkaline polymer electrolyte (APE) is the core component of modern alkaline hydrogen and oxygen fuel cells, and its single ion conductor nature makes the "electrode/APE" interfaces different from the conventional "electrode/solution" interfaces in terms of ion distribution, electrical double layer structure and polarization behavior. Due to the complexity of the APE and the associated solid-solid interfaces, fundamental investigations are challenging and deeper understanding of the structures and properties of such interfaces is in the infant stage. In this work, we aim to investigate the double layer structure from the aspects of differential capacitance curve and potential of zero charge (PZC) at the electrode/QAPPT (quaternary ammonia poly(Nmethyl-piperidine-co-p-terphenyl) interface. Cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and microelectrode-based immersion techniques were employed. The differential capacitance curves of Pt/QAPPT interfaces exhibited an asymmetric U-shaped feature with a minimum at the potential which is consistent with the PZTC measured by the immersion method. The capacitance raised less quickly on the negative than the positive sides of the PZTC. These results reflect the characteristics of the single ion conductor and role of alkaline polyelectrolytes in modifying the double layer structure of the electrode/APE interfaces.
崔苗苗, 韩联欢, 曾兰平, 郭佳瑶, 宋维英, 刘川, 吴元菲, 罗世翊, 刘云华, 詹东平. 单层石墨烯微米尺度图案化和功能化：调控电子传输特性[J]. 电化学（中英文）, 2024, 30(3): 2305251. Cui Miao-Miao, Han Lian-Huan, Zeng Lan-Ping, Guo Jia-Yao, Song Wei-Ying, Liu Chuan, Wu Yuan-Fei, Luo Shi-Yi, Liu Yun-Hua, Zhan Dong-Ping. Micropatterning and Functionalization of Single Layer Graphene: Tuning Its Electron Transport Properties[J]. Journal of Electrochemistry, 2024, 30(3): 2305251. DOI: 10.13208/j.electrochem.2305251
As a promising 2D material, graphene exhibits excellent physical properties including single-atom-scale thickness and remarkably high charge carrier mobility. However, its semi-metallic nature with a zero bandgap poses challenges for its application in high-performance field-effect transistors (FETs). In order to overcome these limitations, various approaches have been explored to modulate graphene's bandgap, including nanoscale confinement, external field induction, doping, and chemical micropatterning. Nevertheless, the stability and controllability still need to be improved. In this study, we propose a feasible method that combines electrochemical bromination and photolithography to precisely tune the electron transport properties of single layer graphene (SLG). Through this method, we successfully fabricated various brominated SLG (SLGBr) micropatterns with high accuracy. Futher investigation revealed that the electron transport properties of SLG can be conveniently tuned by controlling the degree of bromination. The SLGBr exhibited a resistance, and have a decreasing conductance with the bromination degree increasing. When the bromination degree increased to a critical value, the SLGBr demonstrated semiconducting characteristics. This research offers a prospective route for the fabrication of graphene-based devices, providing potential applications in the realm of microelectronics.