▎ 摘　　要

NOVELTY - Preparing nitrogen-doped reduced graphene oxide (N-rGO) supported manganese oxide nanometer catalyst comprises dispersing graphene oxide (GO) in ultrapure water according to a predetermined ratio to obtain a GO suspension. Water-soluble manganese salt, complexing agent, and organic nitrogen source are added to the GO suspension in a predetermined proportion. The complexing agent is EDTA. The obtained mixed solution is put in an autoclave for hydrothermal reaction to obtain the precursor powder after filtering and drying. The precursor powder is heat-treated in an inert atmosphere or a reducing atmosphere at 800-1200℃ for a predetermined time to obtain an N-rGO supported manganese oxide nanocatalyst. USE - Method for preparing nitrogen-doped reduced graphene oxide (N-rGO) supported manganese oxide nanometer catalyst. ADVANTAGE - The method prepares the nitrogen-doped reduced graphene oxide supported manganese oxide nanometer catalyst with good oxygen reduction reaction (ORR) catalytic activity, stability and methanol resistance.