Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 49, Pages 22759-22766Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c11109
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Funding
- National Key R&D Program of China [2020YFA0406103]
- NSFC [21725102, 22122506, 91961106, 22232003, 22075267, 51902311, 21803002]
- Strategic Priority Research Program of the CAS [XDPB14]
- Anhui Provincial Natural Science Foundation [2008085J05]
- Youth Innovation Promotion Association of CAS [2019444]
- Open Funding Project of National Key Laboratory of Human Factors Engineering [SYFD062010K]
- Users with Excellence Program of Hefei Science Center CAS [2020HSC-UE003]
- Fundamental Research Funds for the Central Universities [WK2060000039]
- USTC Center for Micro-and Nanoscale Research and Fabrication
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The study demonstrates that the interfacial CuAlO2 species efficiently stabilizes highly active sites on the Cu-CuAlO2-Al2O3 catalyst during harsh electrochemical conditions, leading to an ultradurable electrochemical CO2RR performance with high C2 selectivity.
The electrochemical CO2 reduction reaction (CO2RR) to produce high value-added hydrocarbons and oxygenates presents a sustainable and compelling approach toward a carbon-neutral society. However, uncontrollable migration of active sites during the electrochemical CO2RR limits its catalytic ability to simultaneously achieve high C2 selectivity and ultra -durability. Here, we demonstrate that the generated interfacial CuAlO2 species can efficiently stabilize the highly active sites over the Cu-CuAlO2-Al2O3 catalyst under harsh electrochemical conditions without active sites regeneration for a long-term test. We show that this unique Cu-CuAlO2-Al2O3 catalyst exhibits ultradurable electrochemical CO2RR performance with an 85% C2 Faradaic efficiency for a 300 h test. Such a simple interfacial engineering design approach unveiled in this work would be adaptable to develop various ultradurable catalysts for industrial-scale electrochemical CO2RR.
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