▎ 摘　　要

NOVELTY - A nitrogen-doped porous carbon/graphene two-dimensional composite electrode material preparation method involves dispersing graphene oxide in a solvent, adding organic monomers, stirring and mixing the suspension. Initiators are added to initiate the polymerization reaction, and a polymer/graphene oxide two-dimensional composite material is obtained via pumping filtration, washing, and drying. The obtained product is mixed with potassium hydroxide, put into a tube furnace and high-temperature activation is performed followed by acid elution, washing and drying to obtain a target product. USE - Method for preparing a nitrogen-doped porous carbon/graphene two-dimensional composite electrode material. ADVANTAGE - The method enables preparing the composite electrode material with two-dimensional structure and short pore channels of micropores, rapidly diffusing the electrolyte ions into the pore channels in the material from external electrolytic liquid phase, and improving the conductivity of the composite material by graphene. DETAILED DESCRIPTION - A nitrogen-doped porous carbon/graphene two-dimensional composite electrode material preparation method involves dispersing graphene oxide in a solvent in an ultrasonic manner to obtain a suspension, adding organic monomers, mechanically stirring and mixing the suspension. Initiators are added to initiate the polymerization reaction, and a polymer/graphene oxide two-dimensional composite material is obtained via pumping filtration, washing, and drying after the completion of the reaction. The obtained product is mixed with potassium hydroxide via a dry method according to a proportion, and the mixture is put into a tube furnace and high-temperature activation is performed under the protection of nitrogen followed by acid elution, deionized water washing, and drying to obtain a target product.