二氧化碳电还原的电解质研究进展  

Research progress on electrolytes for carbon dioxide electroreduction

作　　者：葛旺鑫 朱以华 江宏亮 李春忠[1,2] GE Wangxin;ZHU Yihua;JIANG Hongliang;LI Chunzhong(School of Material Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]华东理工大学化工学院,上海200237

出　　处：《化工学报》2022年第8期3433-3447,共15页CIESC Journal

基　　金：国家自然科学基金项目(21838003,91834301,21978278,21978087)。

摘　　要：基于可再生能源电力将二氧化碳电化学还原(CO_(2)RR)为高价值化学品是实现二氧化碳资源化利用的有效途径。催化剂和电解质组分对界面微环境的调控共同决定了CO_(2)RR的催化性能。尽管在高性能催化剂的设计及制备方面已取得了实质性进展,但电解质组分对界面局部催化环境的影响,以及对CO_(2)RR反应过程的优化机理还未得到充分认识。综述了电解质组分对CO_(2)RR界面微环境调控的研究进展,重点围绕电解质中阳离子、阴离子、溶剂、配体以及添加剂等开展讨论,包括电解质组分对界面化学环境的影响,如界面电场、局部pH、偶极-场作用和界面水结构等,揭示电解质调控的反应机理,以及在改善催化性能中的重要作用。本文从电解质调控角度出发,为设计高催化性能电解体系提供新的研究思路,推动CO_(2)RR领域发展。Electrochemical reduction of CO(CO_(2)RR)to high-value chemicals powered by renewable electricity is an effective way to realize the resourceful use of CO.The catalytic performance of CO_(2)RR is jointly determined by the electrocatalysts and electrolyte components.Despite significant advances in the design and preparation of highperformance catalysts,the impact of electrolyte components on the local catalytic environment at the interface and methods for optimising the CO_(2)RR process are still poorly understood.This paper reviews the research progress of electrolyte component modulation of the interfacial microenvironment during CO_(2)RR,focusing on cations,anions,solvents,ligands and additives in the electrolytes.These include the effects of electrolyte components on the interfacial chemical environment,such as interfacial electric field,local pH,dipole-field interaction and interfacial water structure,revealing the modulation mechanism of electrolytes and their important roles on improving the catalytic performance.From the perspective of electrolyte regulation,this paper provides new research ideas for designing electrolytic systems with high catalytic performance,and promotes the development of CO_(2)RR.

关 键 词：二氧化碳 电化学 电解质 界面 局部微环境 

分 类 号：TQ15[化学工程—电化学工业]