A strategy to control the grain boundary density and Cu+/Cu0 ratio of Cu-based catalysts for efficient electroreduction of CO2 to C2 products

Chunjun Chen; Xiaofu Sun; Xupeng Yan; Yahui Wu; Mingyang Liu; Shuaishuai Liu; Zhijuan Zhao; Buxing Han

doi:10.1039/D0GC00247J

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A strategy to control the grain boundary density and Cu⁺/Cu⁰ ratio of Cu-based catalysts for efficient electroreduction of CO₂ to C2 products†

Chunjun Chen,^ab Xiaofu Sun,

*^ab Xupeng Yan,^ab Yahui Wu,^ab Mingyang Liu,^ab Shuaishuai Liu,^ab Zhijuan Zhao^a and Buxing Han

*^abcd

Author affiliations

* Corresponding authors

^a Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
E-mail: sunxiaofu@iccas.ac.cn, hanbx@iccas.ac.cn

^b School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

^c Physical Science Laboratory, Huairou National Comprehensive Science Center, No. 5 Yanqi East Second Street, Beijing 101400, China

^d Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China

Abstract

Cu(OH)₂/CuO nanocomposite-derived Cu₂O/Cu was highly efficient for CO₂ electroreduction to C2 products. The highest faradaic efficiency and current density could reach 64.5% and 26.2 mA cm⁻², respectively. By changing the calcination time, moderate grain boundary density and the Cu⁺/Cu⁰ ratio in catalysts can be controlled, leading to a large number of active sites and low interfacial charge transfer resistance.

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Article information

DOI: https://doi.org/10.1039/D0GC00247J
Article type: Communication
Submitted: 20 Jan 2020
Accepted: 13 Feb 2020
First published: 13 Feb 2020

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Green Chem., 2020,22, 1572-1576

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A strategy to control the grain boundary density and Cu⁺/Cu⁰ ratio of Cu-based catalysts for efficient electroreduction of CO₂ to C2 products

C. Chen, X. Sun, X. Yan, Y. Wu, M. Liu, S. Liu, Z. Zhao and B. Han, Green Chem., 2020, 22, 1572 DOI: 10.1039/D0GC00247J

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