%0 Journal Article
%A Robens, Elisabeth
%A Hecker, Burkhard
%A Kungl, Hans
%A Tempel, Hermann
%A Eichel, Rüdiger-A.
%T Bimetallic Copper–Silver Catalysts for the Electrochemical Reduction of CO 2 to Ethanol
%J ACS applied energy materials
%V 6
%N 14
%@ 2574-0962
%C Washington, DC
%I ACS Publications
%M FZJ-2023-02714
%P 7571–7577
%D 2023
%X The electrochemical reduction of carbon dioxide to ethanol is a promising way to make CO2 electrolysis economically feasible. In this work, a bimetallic catalyst of silver and copper is synthesized, and the effect of its copper content on the formation of ethanol is analyzed. By decreasing the near-surface copper content from 99 to 45% (measured by XPS) at a current density of −20 mA cm–2, the Faradaic efficiency of ethanol could be enhanced from 5 to 23%. Moreover, we show that with excess of CO, due to a lower copper and a higher silver near-surface content, the formation of ethanol is favored over ethylene.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001027010900001
%R 10.1021/acsaem.3c00985
%U https://juser.fz-juelich.de/record/1009254