▎ 摘　　要

NOVELTY - Nitrogen-doped graphene composite material preparation involves preparing suspension of graphene oxide, adding nitrogen source and an initiator to the suspension with stirring, and then centrifuging resulting product, washed, and dried to obtain graphene oxide doped nitrogen source polymer. The potassium ferricyanide solution and copper chloride solution are added to prepare copper chloride solution with stirring to get a mixed solution, and then placed in a dark environment, where the resulting product is centrifuged, washed, and dried to obtain metal organic framework complex. The obtained graphene oxide doped nitrogen source polymer is dispersed in water with metal organic framework complex with stirring, where the obtained product is centrifuged, washed, and dried to get precursor powder. The above-mentioned precursor powder is heated at 800-1000 degrees C in an inert atmosphere for carbonization, and heat-preserved for 1-2 hours to obtain nitrogen-doped graphene doped composite material. USE - Method for preparing nitrogen-doped graphene composite material used as catalyst in hydrogen evolution reaction (claimed). ADVANTAGE - The method prepares the nitrogen-doped graphene composite material in a simple, cost-effective and eco-friendly manner with high yield, uniform morphology, high nitrogen doping amount, uniform doping, and excellent hydrogen evolution reaction electrocatalytic performance.