Coupling of Cu(100) and (110) Facets Promotes Carbon Dioxide Conversion to Hydrocarbons and Alcohols | Zendy

Zhong Dazhong | Zendy; Zhao ZhiJian | Zendy; Zhao Qiang | Zendy; Cheng Dongfang | Zendy; Liu Bin | Zendy; Zhang Gong | Zendy; Deng Wanyu | Zendy; Dong Hao | Zendy; Zhang Lei | Zendy; Li Jingkun | Zendy; Li Jinping | Zendy; Gong Jinlong | Zendy

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Coupling of Cu(100) and (110) Facets Promotes Carbon Dioxide Conversion to Hydrocarbons and Alcohols

Author(s) -

Zhong Dazhong,

Zhao ZhiJian,

Zhao Qiang,

Cheng Dongfang,

Liu Bin,

Zhang Gong,

Deng Wanyu,

Dong Hao,

Zhang Lei,

Li Jingkun,

Li Jinping,

Gong Jinlong

Publication year - 2021

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.202015159

Subject(s) - faraday efficiency , copper , carbon dioxide , selectivity , coupling (piping) , electrolysis , hydrogen , current density , materials science , electrochemical reduction of carbon dioxide , yield (engineering) , adsorption , electrode , chemical engineering , inorganic chemistry , chemistry , catalysis , electrochemistry , organic chemistry , metallurgy , carbon monoxide , electrolyte , engineering , physics , quantum mechanics

Copper can efficiently electro‐catalyze carbon dioxide reduction to C 2+ products (C 2 H 4 , C 2 H 5 OH, n‐propanol). However, the correlation between the activity and active sites remains ambiguous, impeding further improvements in their performance. The facet effect of copper crystals to promote CO adsorption and C−C coupling and consequently yield a superior selectivity for C 2+ products is described. We achieve a high Faradaic efficiency (FE) of 87 % and a large partial current density of 217 mA cm −2 toward C 2+ products on Cu(OH) 2 ‐D at only −0.54 V versus the reversible hydrogen electrode in a flow‐cell electrolyzer. With further coupled to a Si solar cell, record‐high solar conversion efficiencies of 4.47 % and 6.4 % are achieved for C 2 H 4 and C 2+ products, respectively. This study provides an in‐depth understanding of the selective formation of C 2+ products on Cu and paves the way for the practical application of electrocatalytic or solar‐driven CO 2 reduction.

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