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-  2018 

超浸润纳米阵列电极用于气体参与电催化反应的研究进展

DOI: 10.13543/j.bhxbzr.2018.05.007

Keywords: 超浸润电极,气体析出反应,气体消耗反应,超疏气性,超亲气性,
superwetting electrode
,gas-evolution reaction,gas-consumption reaction,superaerophobicity,superaerophilicity

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Abstract:

气体参与的电催化反应,包括气体析出反应和气体消耗反应,是能量转换过程和化工过程中的重要环节。相比于针对高活性催化剂的研究,对于实际的工业生产过程,调控反应过程中的气体扩散行为对高电流的工业应用有着同样重要的意义。虽然目前已经有不少纳米阵列电极用于有气体参与的电催化反应实例,且表现出较好的电化学性能,但对于气泡在电极材料表面的浸润性行为的基础研究却较少。本文旨在系统地介绍结构化的超浸润纳米阵列电极在气体参与的电催化反应中的作用及应用,从介绍超疏气性和超亲气性定义出发,提出优化电极结构、制备超疏气性和超亲气性电极的方法,然后介绍了几种电极材料在能量转换系统中的应用,最后讨论了超浸润电极未来的发展前景。
Abstract:Gas-involved electrochemical reactions, including gas evolution reactions and gas consumption reactions, are essential components of energy conversion processes and are attracting increasing attention from researchers. Alongside the development of highly active catalysts, gas management during gas-involved electrochemical reactions is equally critical if industrial applications are to achieve high reaction rates (hundreds of milliamperes per square centimeter) under practical operation voltages. Although a series of nanoarray-based structured electrodes have been constructed and shown to have excellent performance in gas-involved electrochemical reactions, our understanding of bubble wetting behavior remains rudimentary. Starting from the definition of superaerophobic and superaerophilic, this paper focuses on methods of optimizing the electrode structure to prepare super-gassing and super-aerobic electrode surfaces and applications of the resulting electrodes in various energy conversion systems. Finally, we discuss the future development of super-wetting electrodes and their applications in electrocatalysis.

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