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Article

Electronic-Structure-Modulated Cu,Co-Coanchored N-Doped Nanocarbon as a Difunctional Electrocatalyst for Hydrogen Evolution and Oxygen Reduction Reactions

by
Liyun Cao
1,
Rui Liu
1,
Yixuan Huang
2,
Dewei Chu
2,
Mengyao Li
2,
Guoting Xu
3,
Xiaoyi Li
1,
Jianfeng Huang
1,*,
Yong Zhao
1 and
Liangliang Feng
1,*
1
School of Materials Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi’an 710021, China
2
School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
3
College of Chemistry and Environmental Sciences, Kashi University, Kashi 844000, China
*
Authors to whom correspondence should be addressed.
Molecules 2024, 29(13), 2973; https://doi.org/10.3390/molecules29132973
Submission received: 30 May 2024 / Revised: 19 June 2024 / Accepted: 20 June 2024 / Published: 22 June 2024
(This article belongs to the Special Issue Battery Chemistry: Recent Advances and Future Opportunities)

Abstract

To alleviate the problems of environmental pollution and energy crisis, aggressive development of clean and alternative energy technologies, in particular, water splitting, metal–air batteries, and fuel cells involving two key half reactions comprising hydrogen evolution reaction (HER) and oxygen reduction (ORR), is crucial. In this work, an innovative hybrid comprising heterogeneous Cu/Co bimetallic nanoparticles homogeneously dispersed on a nitrogen-doped carbon layer (Cu/Co/NC) was constructed as a bifunctional electrocatalyst toward HER and ORR via a hydrothermal reaction along with post-solid-phase sintering technique. Thanks to the interfacial coupling and electronic synergism between the Cu and Co bimetallic nanoparticles, the Cu/Co/NC catalyst showed improved catalytic ORR activity with a half-wave potential of 0.865 V and an excellent stability of more than 30 h, even compared to 20 wt% Pt/C. The Cu/Co/NC catalyst also exhibited excellent HER catalytic performance with an overpotential of below 149 mV at 10 mA/cm2 and long-term operation for over 30 h.
Keywords: Cu-based materials; heterostructure; oxygen reduction reaction; hydrogen evolution reaction Cu-based materials; heterostructure; oxygen reduction reaction; hydrogen evolution reaction

Share and Cite

MDPI and ACS Style

Cao, L.; Liu, R.; Huang, Y.; Chu, D.; Li, M.; Xu, G.; Li, X.; Huang, J.; Zhao, Y.; Feng, L. Electronic-Structure-Modulated Cu,Co-Coanchored N-Doped Nanocarbon as a Difunctional Electrocatalyst for Hydrogen Evolution and Oxygen Reduction Reactions. Molecules 2024, 29, 2973. https://doi.org/10.3390/molecules29132973

AMA Style

Cao L, Liu R, Huang Y, Chu D, Li M, Xu G, Li X, Huang J, Zhao Y, Feng L. Electronic-Structure-Modulated Cu,Co-Coanchored N-Doped Nanocarbon as a Difunctional Electrocatalyst for Hydrogen Evolution and Oxygen Reduction Reactions. Molecules. 2024; 29(13):2973. https://doi.org/10.3390/molecules29132973

Chicago/Turabian Style

Cao, Liyun, Rui Liu, Yixuan Huang, Dewei Chu, Mengyao Li, Guoting Xu, Xiaoyi Li, Jianfeng Huang, Yong Zhao, and Liangliang Feng. 2024. "Electronic-Structure-Modulated Cu,Co-Coanchored N-Doped Nanocarbon as a Difunctional Electrocatalyst for Hydrogen Evolution and Oxygen Reduction Reactions" Molecules 29, no. 13: 2973. https://doi.org/10.3390/molecules29132973

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