Electrolyte manipulation on Cu-based electrocatalysts for electrochemical CO_(2) reduction  

作　　者：Hexin Zhou Wanlong Xi Peng Yang Huiting Huang Jia Tian Marina Ratova Dan Wu 

机构地区：[1]Key Laboratory of Green Chemical Engineering Process of Ministry of Education,Hubei Key Laboratory of Plasma Chemistry and New Materials,School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,Hubei,China [2]Faculty of Science and Engineering,Manchester Metropolitan University,Chester 12 Street,Manchester M15GD,UK

出　　处：《Journal of Energy Chemistry》2024年第12期201-222,共22页能源化学（英文版）

基　　金：supported by the Hubei Provincial Natural Science Foundation of China (2023AFB0049);the Scientific Research Fund Project of Wuhan Institute of Technology (No.K2024006);the Graduate Education Innovation Fund of Wuhan Institute of Technology (No. CX2023091)。

摘　　要：Electrocatalytic reduction of CO_(2)is crucial for environmental sustainability and renewable energy storage,with Cu-based catalysts excelling in producing high-value C_(2+)products.However,a comprehensive analysis of how specific electrolyte influences Cu-based catalysts is lacking.This review addresses this gap by focusing on how electrolytes impact surface reconstruction and the CO_(2) reduction process on Cu-based electrocatalysts,identifying specific electrolyte compositions that enhance the density and stability of active sites,and providing insights into how different electrolyte environments modulate the selectivity and efficiency of C_(2+)product formation.The review begins by exploring how electrolytes induce favorable surface reconstruction in Cu-based catalysts,affecting surface roughness through dissolution-redeposition of Cu species and interactions with halogens and molecular additives.It also covers changes in crystalline facets of Cu and Cu_(2)O,and oxidation states,highlighting transitions from Cu^(0) to Cu^(δ+)and the stabilization of Cu^(+).The role of electrolytes in the C–C coupling process is examined,emphasizing their effects in modulating mass and charge transfer,CO_(2) adsorption,intermediate evolution,and product desorption.Subsequently,the mechanisms by non-aqueous electrolytes,including organic solvents,ionic liquids,and mixed electrolytes,affecting CO_(2) reduction are analyzed,highlighting the unique advantages and challenges of each type.The review concludes by addressing current challenges,proposing solutions,and research directions,such as optimizing electrolyte composition by integrating diverse cations and anions and employing advanced in-situ characterization techniques.These insights can significantly enhance CO_(2)reduction performance on Cu-based electrocatalysts,advancing efficient and sustainable green energy technologies.

关 键 词：CO_(2)reduction reaction Cu-based catalyst ELECTROLYTE Surface reconstruction Intermediates evolution 

分 类 号：O643.36[理学—物理化学] X701[理学—化学]