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- Title
The Role of Phase Mixing Degree in Promoting C−C Coupling in Electrochemical CO<sub>2</sub> Reduction Reaction on Cu‐based Catalysts.
- Authors
Wang, Yinuo; Yang, Fei; Xu, Hongming; Jang, Juhee; Delmo, Ernest P.; Qiu, Xiaoyi; Ying, Zhehan; Gao, Ping; Zhu, Shangqian; Gu, M. Danny; Shao, Minhua
- Abstract
Cu‐based catalysts have been identified as the most promising candidates for generation of C2+ products in electrochemical CO2 reduction reaction. Defect engineering in catalysts is a widely employed strategy for promoting C−C coupling on Cu. However, comprehensive understanding of defect structure‐to‐activity relationship has not been obtained. In this study, controllable defects generation is achieved, which leads to a series of Cu‐based catalysts with various phase mixing degrees. It is observed that the Faradaic efficiency toward C2+ products increases with the phase mixing degree, reaching 81 % at maximum. In situ infrared absorption spectroscopy reveals that the catalysts with higher phase mixing degree tend to form *CO more easily and possess higher retention of *CO under high overpotential window, thereby promoting C−C coupling. This work sheds new light on the relationship between defects and C−C coupling, and the rational developed of more advanced Cu‐base catalysts.
- Subjects
COUPLING reactions (Chemistry); ELECTROLYTIC reduction; CATALYSTS; INFRARED absorption; INFRARED spectroscopy; COPPER
- Publication
Angewandte Chemie, 2024, Vol 136, Issue 16, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202400952