▎ 摘　　要

NOVELTY - Manufacture of nitrogen-doped graphene-and nickel sulfide quantum dot nano-composite involves mixing nickel source, L-cysteine as sulfur source, aqueous ammonia as nitrogen source and graphene oxide solution, washing and hydrothermally treating. USE - Manufacture of nitrogen-doped graphene-and nickel sulfide quantum dot nano-composite used for preparing electrode for supercapacitor, solar battery and lithium battery energy storage material and catalytic material (all claimed). ADVANTAGE - The method enables manufacture of nitrogen-doped graphene-and nickel sulfide quantum dot nano-composite having high electroconductivity, catalytic activity and stability.