▎ 摘　　要

NOVELTY - A nitrogen-doped graphene/nitrogen-doped carbon nanotube/cobaltosic oxide composite paper is prepared by forming graphene oxide dispersion liquid, forming carbon nanotube dispersion liquid, mixing graphene oxide dispersion liquid, carbon nanotube dispersion liquid, and cobaltous nitrate solution to obtain slurry, coating slurry on substrate, drying to obtain cobalt ion-containing graphene oxide/carbon nanotube composite paper, immersing in ammonia aqueous solution to carry out hydrothermal reaction. USE - Preparation of nitrogen-doped graphene/nitrogen-doped carbon nanotube/cobaltosic oxide composite paper (claimed). ADVANTAGE - Process is simple and has mild reaction conditions, enhanced oxygen reduction reaction (ORR) catalytic performance, and excellent electro-catalysis property. DESCRIPTION OF DRAWING(S) - The drawing shows an optical photograph of nitrogen-doped graphene/nitrogen-doped carbon nanotube/cobaltosic oxide composite paper ORR curve.