Dynamic Restructuring of Cu7S4/Cu for Efficient CO2 Electro‐reduction to Formate

Author:

Yang Rui12ORCID,Zheng Xiaozhong2,Fu Hao1,Cao Xinyue1,Hu Yangguang3,Huang Yiyin4

Affiliation:

1. School of Materials and Chemistry Biomass Molecular Engineering Center Anhui Agriculture University Hefei 230036, P.R. China

2. Advanced Materials and Catalysis Group State Key Laboratory of Clean Energy Utilization Center of Chemistry for Frontier Technologies, Institute of Catalysis Department of Chemistry Zhejiang University Hangzhou 310028 P. R. China.

3. Hefei National Laboratory for Physical Sciences at the Microscale iChEM School of Chemistry and Materials Science National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230026, China

4. College of Physics and Energy Fujian Normal University Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fuzhou 350117 China

Abstract

AbstractOptimized catalytic properties and reactant adsorption energy played a crucial role in promoting CO2 electrocatalysis. Herein, Cu7S4/Cu underwent in situ dynamic restructuring to generate S−Cu2O/Cu hybrid catalyst for effective electrochemical CO2 reduction to formate that outperformed Cu2O/Cu and Cu7S4. Thermodynamic and in situ Raman spectra revealed that the optimized adsorption of the HCOO* intermediate on S−Cu2O/Cu was regulated and the H2 pathway (surface H) was suppressed by S‐doping. Meanwhile, Cu7S4/Cu nanoflowers created abundant boundaries for ECR and strengthened the CO2 adsorption by inducing Cu. These findings provide a new perspective on synthetic methods for various electrocatalytic reduction processes.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Fujian Province

Publisher

Wiley

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