摘要
Electrocatalytic CO_(2)reduction(ECR)offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO_(2)as the feedstock.However,the lack of cost-effective electrocatalysts with better performances has seriously hindered its application.Herein,a one-step co-electrodeposition method was used to introduce Zn,a metal with weak^(*)CO binding energy,into Cu to form Cu/Zn intermetallic catalysts(Cu/Zn IMCs).It was shown that,using an H-cell,the high Faradaic efficiency of C_(2+)hydrocarbons/alcohols()could be achieved in ECR by adjusting the surface metal components and the applied potential.In suitable conditions,FEC_(2+)and current density could be as high as 75%and 40 mA/cm^(2),respectively.Compared with the Cu catalyst,the Cu/Zn IMCs have a lower interfacial charge transfer resistance and a larger electrochemically active surface area(ECSA),which accelerate the reaction.Moreover,the^(*)CO formed on Zn sites can move to Cu sites due to its weak binding with*CO,and thus enhance the C–C coupling on the Cu surface to form C_(2+)products.
基金
supported by the National Key R&D Program of China(Grant No.2020YFA0710201)
the China Postdoctoral Science Foundation(Grant No.2023M731096)
the National Natural Science Foundation of China(Grant Nos.22022307,22121002,and 21890761)
the Research Funds of Happiness Flower ECNU(Grant No.2020ST2203).
作者简介
Shuaiqiang JIA,E-mail:sqjia@chem.ecnu.edu.cn;Haihong WU,E-mail:hhwu@chem.ecnu.edu.cn;Buxing HAN,E-mail:hanbx@iccas.ac.cn。
