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Dynamic Restructuring of Cu7S4/Cu for Efficient CO2 Electroreduction to HCOOH
  • +3
  • rui yang,
  • Xiaozhong zheng,
  • Hao Fu,
  • xinyue cao,
  • Yangguang Hu,
  • Yiyin Huang
rui yang
Anhui Agricultural University

Corresponding Author:[email protected]

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Xiaozhong zheng
Zhejiang University
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Hao Fu
Anhui Agricultural University
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xinyue cao
Anhui Agricultural University
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Yangguang Hu
University of Science and Technology of China
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Yiyin Huang
Fujian Normal University College of Physics and Energy
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Abstract

Optimized catalytic properties and reactant adsorption energy play a crucial role in promoting CO2 electrocatalysis. Herein, Cu7S4/Cu undergoes in situ dynamic restructuring to generate S-Cu2O/Cu hybrid catalyst for effective electrochemical CO2 reduction to formate that outperforms Cu2O/Cu and Cu7S4. Thermodynamic and experimental analyses reveal that the optimized adsorption of the HCOO* intermediate on S-Cu2O/Cu is regulated and the H2 pathway (surface H) is suppressed by S-doping. Meanwhile, Cu7S4/Cu nanoflowers create abundant grain boundaries for ECR and strengthen the CO2 adsorption by inducing Cu. These findings provide a new perspective on synthetic methods for various electrocatalytic reduction processes.