▎ 摘　　要

NOVELTY - The preparation method of graphene-loaded cobalt-nitrogen-carbon oxygen reduction catalyst involves (A) adding graphene oxide to water, stirring, centrifuging, and collecting bottom precipitate (I), (B) adding 2-methylimidazole solution to precipitate (I), stirring, centrifuging, collecting bottom precipitate (II), adding cobalt acetate solution to precipitate (II), stirring, centrifuging, and collecting bottom precipitate (III), (C) placing precipitate (III) in 2-methylimidazole solution, repeating step (B), and drying, and (D) carbonizing dried product. USE - Preparation of graphene-loaded cobalt-nitrogen-carbon oxygen reduction catalyst (claimed). ADVANTAGE - The method enables preparation of graphene-loaded cobalt-nitrogen-carbon oxygen reduction catalyst with excellent stability and electrical conductivity, rapid electron transmission properties, and increased catalytic activity. DETAILED DESCRIPTION - The preparation method of graphene-loaded cobalt-nitrogen-carbon oxygen reduction catalyst involves (A) adding graphene oxide to water, stirring at room temperature, centrifuging, and collecting bottom precipitate (I), (B) separately adding cobalt acetate and 2-methylimidazole to water to obtain homogeneous cobalt acetate solution and 2-methylimidazole solution, adding 2-methylimidazole solution to precipitate (I), stirring at room temperature, centrifuging, and collecting bottom precipitate (II), adding cobalt acetate solution to precipitate (II), continuously stirring at room temperature, centrifuging, and collecting bottom precipitate (III), (C) placing precipitate (III) in 2-methylimidazole solution, repeating step (B) for 2-10 times, and drying obtained product, and (D) carbonizing dried product at constant temperature in protective gas atmosphere, removing product, and grinding.