Electronic Communication between Co and Ru Sites Decorated on Nitrogen-doped Carbon Nanotubes Boost the Alkaline Hydrogen Evolution Reaction

Authors

Mengting Gao #, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Ying Wei #, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Xuemeng Huo, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Wenjie Zhu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Qingqing Liu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Jinyuan Qiang, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Wanwan Liu, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Ying Wang, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Xu Li, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Jianfeng Huang, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
Yongqiang Feng, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China

Document Type

Article

Corresponding Author(s)

Yongqiang Feng(fengyq@sust.edu.cn)

Abstract

Designing highly efficient Pt-free electrocatalysts with low overpotential for the alkaline hydrogen evolution reaction (HER) remains a significant challenge. Here, a novel and efficient Co, Ru bimetallic electrocatalyst composed by CoRu nanoalloy decorated on the N-doped carbon nanotubes (N-CNTs), deriving from the fullerenol and melamine via hydrothermal treatment followed by pyrolysis. Benefiting from the electronic communication between Co and Ru sites, the as-obtained CoRu@N-CNTs 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 M KOH, outperforming the benchmark Pt/C catalyst. The present work would pave a new way for the design and construction of efficient electrocatalyst for energy storage and conversion.

Graphical Abstract

Keywords

CoRu alloy, electrocatalyst, water splitting, hydrogen evolution reaction, carbon nanotubes

DOI

10.61558/2993-074X.3460

Online Date

4-23-2024

Recommended Citation

Gao, Mengting #; Wei, Ying #; Huo, Xuemeng; Zhu, Wenjie; Liu, Qingqing; Qiang, Jinyuan; Liu, Wanwan; Wang, Ying; Li, Xu; Huang, Jianfeng; and Feng, Yongqiang, "Electronic Communication between Co and Ru Sites Decorated on Nitrogen-doped Carbon Nanotubes Boost the Alkaline Hydrogen Evolution Reaction" (2024). Journal of Electrochemistry. DOI: 10.61558/2993-074X.3460

https://jelectrochem.xmu.edu.cn/online_first/71