摘要/Abstract

电催化二氧化碳还原是能源化学及催化科学的研究重点与难点. 气-固-液三相界面模型作为物理化学中的基本概念, 近年来被越来越多地应用于电催化二氧化碳还原反应的研究, 其相比于传统固-液两相体系表现出了诸多优点. 本综述阐述了三相界面电催化二氧化碳还原研究进展, 对三相界面电催化体系进行分类及原理探究. 再具体到二氧化碳还原反应, 讨论其水下超亲气体系以及气体扩散层体系的结构特性及电催化性质, 并对包括反应物界面扩散及界面浸润性等影响因素进行了系统分析. 最后对当前研究存在的问题及今后电催化二氧化碳还原领域的发展方向进行了总结与展望.
关键词: 三相界面, 二氧化碳还原, 电催化, 传质, 浸润性
Electrocatalytic carbon dioxide reduction is the focus and nodus of energy chemistry and catalytic science. As a basic concept in physical chemistry, gas-solid-liquid triphase interface model has been widely studied in electrocatalytic carbon dioxide reduction reaction in recent years, showing many advantages compared with traditional solid-liquid biphase systems. In this review, we discuss the research progress of triphase interface eletrocatalytic carbon dioxide reduction, focused on the classification as well as the principle of triphase interface eletrocatalytic systems. Then, carbon dioxide electroreduction properties of various triphase systems including underwater superaerophilic and gas diffusion layer systems are discussed, with special attention on the influence factors, such as the interfacial diffusion and interfacial wettability of reactants. Finally, we summarize and prospect the existing problems and the future development direction of electrocatalytic carbon dioxide reduction based on triphase systems.
Key words: triphase interface, carbon dioxide reduction, electrocatalysis, mass transfer, wettability


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