▎ 摘　　要

NOVELTY - A composite material comprises 46-52 %mass nitrogen-sulfur co-doped graphene and 48-54 %mass cobalt-cobalt oxide core-shell nanoparticles uniformly arranged on the co-doped graphene substrate. USE - Composite material used for oxygen reduction catalysis reaction in hydrogen fuel cell (claimed). ADVANTAGE - The composite material comprises nitrogen-sulfur co-doped graphene having small diameter uniformly distributed on the substrate, and has high catalytic activity for oxygen reduction reaction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of the composite material, which involves adding graphene oxide to dimethyl sulfoxide, ultrasonically dispersing, adding 2-methylimidazole and cobalt acetate in sequence under stirring, solvothermally reacting the mixed solution ZIF-67/graphene oxide precursor, post-treating the precursor and calcining in an inert gas atmosphere to obtain a nitrogen-sulfur co-doped graphene-based cobalt nanoparticle composite material, calcining the composite material in air.