▎ 摘　　要

NOVELTY - Preparation of nickel-iron alloy nanoparticle/graphene composite, involves dispersing a divalent nickel salt, a ferrous salt, and graphene oxide in water, mixing with hydrazine hydrate, and placing the obtained mixture in sealed condition for hydrothermal reaction. USE - Preparation of nickel-iron alloy nanoparticle/graphene composite for use in catalytic oxygen evolution reaction (all claimed). ADVANTAGE - The method enables simple preparation of high-purity nickel-iron alloy nanoparticle/graphene composite having excellent catalytic activity, under mild reaction conditions.