▎ 摘　　要

NOVELTY - The preparation method of nitrogen-doped graphene hollow spheres involves adding 2.5% mg/ml polystyrene microspheres aqueous dispersion liquid, 1-3 mg/ml aqueous graphene oxide dispersion liquid and water to melamine in a ratio of 1 ml:1000 ml:1000 ml:50 g, uniformly mixing, sintering the mixture at 800 degrees C for 2 hours under inert gas atmosphere, and cooling to room temperature. USE - The method is useful for preparation of nitrogen-doped graphene hollow spheres (claimed). ADVANTAGE - The method enables economical preparation of nitrogen-doped graphene hollow spheres with excellent catalytic properties, stability and toxic resistance.