基于界面工程的自支撑催化电极用于电解水制氢

Interface engineering of self-supported electrode for electrochemical water splitting

氢能作为战略性产业,是未来国家能源体系的重要组成部分,为终端用户提供绿色低碳的能源载体。利用电解水制氢过程,有利于消纳大规模可再生清洁能源,促进国家能源结构调整。为了满足大规模、高效率、长寿命的电解水装备需求,亟需将界面工程原理与宏量放大工艺相结合,推动纳米技术走向产业化。本综述归纳界面工程研究现状,针对自支撑催化电极应用,以增强电极的稳定性与电催化活性为目标,重点介绍自支撑催化电极的微观结构调控方法,阐明3种催化界面(催化剂-基底界面、催化剂内部界面、催化电极-电解液界面)的调控策略,以及工程放大与宏量制备技术。在此基础上,指明高性能、高稳定的自支撑催化电极未来的研究方向。

Hydrogen energy,as a strategic emerging industry,is an essential part of the future national energy system and decarbonization energy carrier for end users.Hydrogen generation via water electrolysis benefits large-scale renewable energy consumption and the national energy structure transformation.To fulfill the need for large-scale,highly efficient,and long-life water electrolyzers,integrating interfacial engineering concepts and manufacturing methods to enhance nanotechnology industrialization is crucial.Based on interfacial engineering principles,this review summarizes recent progress on self-supported electrodes,with a focus on improving the stability of the electrode structure and electrocatalytic activity,and examines the influence of microstructure on catalytic performance,particularly at three key interfaces(catalytic sites/substrate interface,interface among catalysts,and electrode/electrolyte interface).Moreover,we discuss strategies for developing self-supported catalytic electrodes with high activity and stability.