▎ 摘　　要

NOVELTY - Preparation of nickel sulfide electrocatalyst based on in-situ growth of nitrogen and sulfur co-doped reduced graphene oxide involves uniformly dispersing nickel source and graphene oxide in ethylene glycol, reacting at 160-200 degrees C for 0.5-2 hours in oil bath to obtain a reduced graphene oxide/nickel hydroxide compound, using thioacetamide and reduced graphene oxide/nickel hydroxide compound as raw material, dissolving in an organic solvent, performing solvent thermal reaction at 100-180 degrees C to obtain a precursor, and annealing under inert gas atmosphere at 300-400 degrees C for 1-5 hours. USE - Preparation of nickel sulfide electrocatalyst used for preparing hydrogen by electrolyzing water (all claimed). ADVANTAGE - The method is economical, simple, short, safe, and uses simple preparation device.