Morphology-Controlled Synthesis of V1.11S2 for Electrocatalytic Hydrogen Evolution Reaction in Acid Media

Qiuyue Chen; Siqi Tian; Xiaonan Liu; Xuguang An; Jingxian Zhang; Longhan Xu; Weitang Yao; Qingquan Kong

doi:10.3390/molecules27228019

Morphology-Controlled Synthesis of V_1.11S₂ for Electrocatalytic Hydrogen Evolution Reaction in Acid Media

Molecules. 2022 Nov 18;27(22):8019. doi: 10.3390/molecules27228019.

Authors

Qiuyue Chen^{1

2

3}, Siqi Tian², Xiaonan Liu¹, Xuguang An², Jingxian Zhang², Longhan Xu², Weitang Yao², Qingquan Kong²

Affiliations

¹ College of Chemical Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
² School of Mechanical Engineering, Chengdu University, Chengdu 610106, China.
³ School of Chemical Engineering, Sichuan University, Chengdu 610065, China.

Abstract

High-performance low-cost catalysts are in high demand for the hydrogen evolution reaction (HER). In the present study, we reported that V_1.11S₂ materials with flower-like, flake-like, and porous morphologies were successfully synthesized by hydrothermal synthesis and subsequent calcination. The effects of morphology on hydrogen evolution performance were studied. Results show that flower-like V_1.11S₂ exhibits the best electrocatalytic activity for HER, achieving both high activity and preferable stability in 0.5 M H₂SO₄ solution. The main reason can be ascribed to the abundance of catalytically active sites and low charge transfer resistance.

Keywords: V1.11S2; hydrogen evolution reaction; hydrothermal synthesis; morphology.

Abstract

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