▎ 摘　　要

NOVELTY - A nitrogen-doped graphene/molybdenum disulfide composite material comprises nitrogen-doped graphene, and molybdenum disulfide that is vertically grown on a surface of the nitrogen-doped graphene, where the doped nitrogen comprises a pyridine type nitrogen and graphite type nitrogen, and the molybdenum disulfide has nano sheet structure. USE - Nitrogen doped graphene/molybdenum disulfide composite material for use in a lithium-ion battery, sodium battery, magnesium battery and supercapacitor, and for producing an electro-catalytic hydrogen and photocatalytic hydrogen (all claimed). ADVANTAGE - The material improves capacity, circulation performance and rate performance of the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a nitrogen-doped graphene/molybdenum disulfide composite material, which involves putting solution of graphene oxide, nitrogen-containing precursor, and sulfur-containing and molybdenum containing precursor in a solvent, and heat-treating the obtained precursor material in an inert gas protection atmosphere to obtain the finished product.