A hydrophobic Cu/Cu2O sheet catalyst for selective electroreduction of CO to ethanol

Guifeng Ma, Olga A. Syzgantseva, Yan Huang, Dragos Stoian, Jie Zhang, Shuliang Yang, Wen Luo, Mengying Jiang, Shumu Li, Chunjun Chen, Maria A. Syzgantseva, Sen Yan, Ningyu Chen, Li Peng (), Jun Li () and Buxing Han
Additional contact information
Guifeng Ma: College of Chemistry and Chemical Engineering, Xiamen University
Olga A. Syzgantseva: Lomonosov Moscow State University
Yan Huang: College of Chemistry and Chemical Engineering, Xiamen University
Dragos Stoian: École Polytechnique Fédérale de Lausanne (EPFL)
Jie Zhang: École Polytechnique Fédérale de Lausanne (EPFL)
Shuliang Yang: College of Energy, Xiamen University
Wen Luo: Shanghai University
Mengying Jiang: College of Chemistry and Chemical Engineering, Xiamen University
Shumu Li: Chinese Academy of Sciences, Beijing Mass Spectrum Center
Chunjun Chen: Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Maria A. Syzgantseva: Lomonosov Moscow State University
Sen Yan: College of Chemistry and Chemical Engineering, Xiamen University
Ningyu Chen: College of Chemistry and Chemical Engineering, Xiamen University
Li Peng: College of Chemistry and Chemical Engineering, Xiamen University
Jun Li: College of Chemistry and Chemical Engineering, Xiamen University
Buxing Han: Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Electrocatalytic reduction of carbon monoxide into fuels or chemicals with two or more carbons is very attractive due to their high energy density and economic value. Herein we demonstrate the synthesis of a hydrophobic Cu/Cu2O sheet catalyst with hydrophobic n-butylamine layer and its application in CO electroreduction. The CO reduction on this catalyst produces two or more carbon products with a Faradaic efficiency of 93.5% and partial current density of 151 mA cm−2 at the potential of −0.70 V versus a reversible hydrogen electrode. A Faradaic efficiency of 68.8% and partial current density of 111 mA cm−2 for ethanol were reached, which is very high in comparison to all previous reports of CO2/CO electroreduction with a total current density higher than 10 mA cm−2. The as-prepared catalyst also showed impressive stability that the activity and selectivity for two or more carbon products could remain even after 100 operating hours. This work opens a way for efficient electrocatalytic conversion of CO2/CO to liquid fuels.

Date: 2023
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DOI: 10.1038/s41467-023-36261-1

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