▎ 摘　　要

NOVELTY - A nitrogen-doped three-dimensional graphene catalyst preparing method involves preparing three-dimensional graphene material with a formaldehyde resin by using hydrothermal reaction with oxidized graphene, a nitrogenous substance and formaldehyde, high-temperature heat treating under protective atmosphere to obtain nitrogen-doped three-dimensional graphene catalyst (N-3DrGO). USE - Method for preparing nitrogen-doped three-dimensional graphene catalyst that is utilized as an electrode material for supercapacitor and a non-noble metal cathode catalyst material in a fuel cell (claimed). ADVANTAGE - The catalyst has high catalyze activity and stability.