▎ 摘　　要

NOVELTY - Preparing nitrogen-doped graphene aerogel microsphere comprises (1) adding the graphene oxide into de-ionized water, and ultrasonically dispersing for 1.5-2 hours to obtain graphene oxide dispersion liquid, adding pyrrole drop into graphene oxide dispersion liquid, stirring vigorously for 30-60 minutes to obtain graphene oxide/pyrrole dispersion liquid, dropping ferric chloride dispersion liquid into mixed solution, stirring and reacting for 7-9 hours to obtain graphene oxide/polypyrrole dispersion liquid, and (2) adding obtained graphene oxide/polypyrrole dispersion liquid into injector, loading on the electrostatic spraying device, applying voltage of 7-9 kV, the lower part of the injector is receiving bath, where the receiving bath is container filled with normal hexane, placing container in the coagulating bath filled with ethyl acetate and liquid nitrogen and electrostatic spraying. USE - The nitrogen-doped graphene aerogel microsphere is used as anode catalyst carrier of direct methanol fuel cell (claimed). ADVANTAGE - The catalyst exhibits high platinum loading, smaller platinum nanoparticle size and uniformly dispersed platinum nanoparticle, and shows good electrocatalytic performance for the oxidation of direct methanol fuel cells. DETAILED DESCRIPTION - Preparing nitrogen-doped graphene aerogel microsphere comprises (1) adding the graphene oxide into de-ionized water, and ultrasonically dispersing for 1.5-2 hours to obtain graphene oxide dispersion liquid, adding pyrrole drop into graphene oxide dispersion liquid, stirring vigorously for 30-60 minutes to obtain graphene oxide/pyrrole dispersion liquid, dropping ferric chloride dispersion liquid into mixed solution, stirring and reacting for 7-9 hours to obtain graphene oxide/polypyrrole dispersion liquid, and (2) adding obtained graphene oxide/polypyrrole dispersion liquid into injector, loading on the electrostatic spraying device, applying voltage of 7-9 kV, the lower part of the injector is receiving bath, where the receiving bath is container filled with normal hexane, placing container in the coagulating bath filled with ethyl acetate and liquid nitrogen, electrostatic spraying, separating ice microsphere and normal hexane, freezing and drying the ice microsphere for 48 hours, heat treating under the condition of -50degrees Celsius and 5Pa, and obtaining nitrogen-doped graphene aerogel microsphere (rGNAMs). An INDEPENDENT CLAIM is also included for nitrogen-doped graphene aerogel microsphere.