首页|Electrochemical CO2 reduction to C2+products over Cu/Zn intermetallic catalysts synthesized by electrodeposition
Electrochemical CO2 reduction to C2+products over Cu/Zn intermetallic catalysts synthesized by electrodeposition
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Electrocatalytic CO2 reduction(ECR)offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO2 as the feedstock.However,the lack of cost-effective electroca-talysts 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 C2+hydrocarbons/alcohols(FEC2+)could be achieved in ECR by adjusting the surface metal components and the applied potential.In suitable conditions,FEC2+and current density could be as high as 75％and 40 mA/cm2,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 C2+products.
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