Engineering the CuO–HfO2 interface toward enhanced CO2 electroreduction to C2H4
Engineering the CuO–HfO2 interface toward enhanced CO2 electroreduction to C2H4
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DOI：
10.1039/d2cc01776h
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Zhenyu Sun
中科院分区：
文献类型：
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作者：
Xin Li;Lifen Li;Lijun Wang;Qineng Xia;Leiduan Hao;Xinyu Zhan;Alex W. Robertson;Zhenyu Sun
We report significantly enhanced electrochemical CO2 reduction (ECR) to C2H4 by tuning the interface of a metal oxide composite (CuOx/HfO2), enabling a C2H4 faradaic efficiency as high as 62.6 ± 1.3% at 300 mA cm-2, in contrast to only 11.6 ± 1.6% over pure CuO. Collective knowledge from multiple control experiments, density functional theory calculations, and operando Raman study reveals that the CuOx-HfO2 interface greatly strengthens CO2 adsorption and the binding of CO for further C-C coupling to yield C2H4.
