TY  - EJOU
AU  - Chu, Xiaomeng 
AU  - Wu, Yihui 
AU  - Wang, Guangyuan 

TI  - Facile Electrodeposition of WS<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub> Heterostructure on Nickel Mesh as Binder-Free Electrocatalyst for Enhanced Hydrogen Evolution Reaction
T2  - Chalcogenide Letters

PY  - 
VL  - 
IS  - 
SN  - 1584-8663

AB  - 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 WS<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub> heterostructure was constructed through an electrodeposition strategy on nickel mesh. The WS<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub> electrocatalyst shows an overpotential of 52 mV at a current density of 10 mA·cm<sup>−2</sup>, a small Tafel slope of 52.1 mV·dec<sup>−1</sup>, 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 WS<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub> 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.
KW  - WS<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub> heterostructure; hydrogen evolution reaction; electrodeposition; electrocatalyst; alkaline media

DO  - 10.32604/cl.2026.088086