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Meng-Ting Gao, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Ying Wei, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Xue-Meng Hu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Wenj-Jie Zhu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Qing-Qing Liu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Jin-Yuan Qiang, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Wan-Wan Liu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Ying Wang, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Xu Li, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Jian-Feng Huang, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
Yong-Qiang Feng, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, ChinaFollow

Corresponding Author

Yong-Qiang Feng([email protected])

Abstract

Designing highly efficient Pt-free electrocatalysts with low overpotential for an alkaline hydrogen evolution reaction (HER) remains a significant challenge. Here, a novel and efficient cobalt (Co), ruthenium (Ru) bimetallic electrocatalyst composed of CoRu nanoalloy decorated on the N-doped carbon nanotubes (CoRu@N-CNTs), was prepared by reacting fullerenol with melamine via hydrothermal treatment and followed by pyrolysis. Benefiting from the electronic communication between Co and Ru sites, the as-obtained CoRu@N-CNTs catalyst exhibited superior electrocatalytic HER activity. To deliver a current density of 10 mA·cm–2, it required an overpotential of merely 19 mV along with a Tafel slope of 26.19 mV·dec–1 in 1 mol·L–1 potassium hydroxide (KOH) solution, outperforming the benchmark Pt/C catalyst. The present work would pave a new way towards the design and construction of an efficient electrocatalyst for energy storage and conversion.

Graphical Abstract

Keywords

CoRu alloy; Electrocatalyst; Water splitting; Hydrogen evolution reaction; Carbon nanotubes

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Date

2024-09-28

Revised Date

2024-04-09

Received Date

2024-03-08

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