Facile Electrodeposition of WS2/Ni3S2 Heterostructure on Nickel Mesh as Binder-Free Electrocatalyst for Enhanced Hydrogen Evolution Reaction

Xiaomeng Chu; Yihui Wu; Guangyuan Wang

doi:10.32604/cl.2026.088086

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Facile Electrodeposition of WS₂/Ni₃S₂ Heterostructure on Nickel Mesh as Binder-Free Electrocatalyst for Enhanced Hydrogen Evolution Reaction

Xiaomeng Chu¹, Yihui Wu^2,*, Guangyuan Wang³
1 Institute of Aviation Engineering, Jiangsu Aviation Technical College, Zhenjiang, China
2 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
3 Basic Engineering Training Center, Jiangsu University, Zhenjiang, China
* Corresponding Author: Yihui Wu. Email: email
(This article belongs to the Special Issue: Functional Chalcogenides Materials for Electrochemical Energy Storage and Conversion)

Chalcogenide Letters https://doi.org/10.32604/cl.2026.088086

Received 30 June 2026; Accepted 21 September 2026; Published online 29 September 2026

Abstract

Electrocatalytic hydrogen evolution reaction (HER) underpins the scalable synthesis of renewable green hydrogen, yet conventional catalytic systems are constrained by overreliance on scarce noble metals, sluggish mass transport kinetics, and inefficient intermediate modulation. In this work, an efficient HER electrocatalyst with a WS₂/Ni₃S₂ heterostructure was constructed through an electrodeposition strategy on nickel mesh. The WS₂/Ni₃S₂ electrocatalyst shows an overpotential of 52 mV at a current density of 10 mA·cm⁻², a small Tafel slope of 52.1 mV·dec⁻¹, and a reduced charge transfer resistance (Rct = 22.80 Ω) in 1.0 M KOH electrolyte, as well as excellent stability. The boosted HER performance originates from the strong interfacial electronic coupling at the WS₂/Ni₃S₂ heterojunction, which simultaneously maximizes the density of accessible active sites and triggers interfacial charge redistribution to accelerate water cleavage kinetics. This work develops a feasible synthetic strategy to construct high-performance self-supported HER electrocatalysts for large-scale hydrogen production.