碱性介质中电催化析氢反应催化剂设计策略与展望  

Design strategies and prospects for electrocatalyst hydrogen evolution reaction in alkaline environment

作　　者：白帆 BAI Fan(Sinopec(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013,China)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013

出　　处：《石油化工》2024年第5期737-744,共8页Petrochemical Technology

摘　　要：基于电解水制氢的技术现状,分析了目前研究碱性电解水制氢的主要原因与难点,阐述了碱性电解水制氢催化剂的评价指标与设计趋势;对比了酸性和碱性电化学析氢反应机制的差异并梳理了催化剂的活性评价参数。由于碱性析氢反应机制的复杂性,评估电催化剂活性更需要综合各类基准测试进行判断。碱性析氢反应催化剂的设计关键在于降低水分子解离过程的影响,探讨了碱性析氢反应催化剂的设计趋势,包括构建双活性位点、调控电子结构、调控表界面等,通过平衡催化剂的H结合能与OH结合能,使反应各步骤都能快速进行。The main reasons and challenges for electrochemical hydrogen evolution in alkaline environment are analyzed,and the benchmarks as well as design strategies for electrocatalysts are expounded based on the current technical status of hydrogen production by water electrolysis.The differences in hydrogen evolution between the reaction mechanisms of acidic and alkaline environment are compared,and the evaluation parameters for evaluating the catalyst activity are organized.In addition,the evaluation of catalyst activity requires comprehensive judgment based on various benchmark tests due to the complexity of the hydrogen evolution reaction mechanism.The key to the design of alkaline hydrogen evolution reaction catalysts lies in reducing the impact of water molecule dissociation.The design trends for catalysts are discussed,including the construction of dual active sites,modulation of electronic structure,and control of interfacial properties.By balancing the hydrogen binding energy and hydroxide binding energy of the catalyst,all steps of the reaction can proceed rapidly.

关 键 词：碱性电解水制氢 反应机理 电催化剂评价 催化剂设计 

分 类 号：TQ151.1[化学工程—电化学工业]