Band structure engineering of W replacement in ReSe2 nanosheets for enhancing hydrogen evolution

Xiaowei Guo; Tong Wu; Siwei Zhao; Yuqiang Fang; Shumao Xu; Miao Xie; Fuqiang Huang

doi:10.1039/d1cc07151c

Band structure engineering of W replacement in ReSe₂ nanosheets for enhancing hydrogen evolution

Chem Commun (Camb). 2022 Feb 22;58(16):2682-2685. doi: 10.1039/d1cc07151c.

Authors

Xiaowei Guo^{1

2}, Tong Wu^{1

2}, Siwei Zhao³, Yuqiang Fang¹, Shumao Xu¹, Miao Xie^{1

2}, Fuqiang Huang^{1

3}

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, 200050, P. R. China. huangfq@mail.sic.ac.cn.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing, 100049, P. R. China.
³ State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.

PMID: 35107447
DOI: 10.1039/d1cc07151c

Abstract

Layered transition metal dichalcogenide rhenium selenide (ReSe₂) has attracted great attention as an electrocatalyst for the hydrogen evolution reaction (HER) due to its excellent stability and sufficient active sites. However, ReSe₂ has intrinsically poor conductivity, which leads to the insufficient utilization of electrocatalytic active sites. Herein, we designed the regulation of the electronic band structure by W replacement in ReSe₂ nanosheets to greatly improve the conductivity. The Re_0.7W_0.3Se₂ exhibits an overpotential of 141 mV at 10 mA cm^-2 and a Tafel slope of 65.3 mV dec^-1, superior to that of the original ReSe₂ and WSe₂. This work aims to provide a feasible strategy to promote the HER activity of ReSe₂.