A new compound Pt3Bi2S2 with superior performance for the hydrogen evolution reaction

Yuqiang Fang; Sishun Wang; Gaoxin Lin; Xin Wang; Fuqiang Huang

doi:10.1039/d1cc02741g

A new compound Pt₃Bi₂S₂ with superior performance for the hydrogen evolution reaction

Chem Commun (Camb). 2021 Aug 10;57(64):7946-7949. doi: 10.1039/d1cc02741g.

Authors

Yuqiang Fang¹, Sishun Wang¹, Gaoxin Lin¹, Xin Wang², Fuqiang Huang³

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. huangfq@mail.sic.ac.cn.
² College of Chemistry, and Center of Green Catalysis, Zhengzhou University, Zhengzhou 450001, P. R. China. wangxin0620@zzu.edu.cn.
³ State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. huangfq@mail.sic.ac.cn and State Key Laboratory of Rare Earth Materials Chemistry and Applications and National Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China and Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 34286729
DOI: 10.1039/d1cc02741g

Abstract

The exploration of efficient electrocatalysts for the hydrogen evolution reaction (HER) is beneficial to obtain renewable clean energy. Herein, a new parkerite-type compound Pt3Bi2S2 was synthesized, constructed by [PtBi4S2] octahedra. The Bi 6p orbital electrons upshift the Pt 5d band to promote hydrogen adsorption. Moreover, the Bi-Pt orbital hybridization greatly improves the conductivity and accelerates the charge transfer during the electrocatalytic process. Hence, Pt3Bi2S2 exhibits a superior catalytic activity for the HER with a low overpotential of 61 mV (at j = 10 mA cm-2) and a Tafel slope of 51 mV dec-1. In addition, Pt3Bi2S2 has higher stability than commercial Pt/C. This work proposes a promising strategy for designing new excellent HER catalysts.