▎ 摘　　要

NOVELTY - The method involves mixing m-phenylenediamine with graphene aerogel composite under room temperature. The graphene aerogel in ferric chloride (FeCl3) solution is filtered and dried to obtain graphene aerogel iron. The crude product is obtained by heating the graphene aerogel iron under inert atmosphere. The iron in the crude product is removed by diluted acid and is washed with water. USE - Method for obtaining three-dimensional graphene-based nitrogen doped porous carbon composite electrode material. ADVANTAGE - The specific surface area is increased and the transport path is reduced. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of gas composite material.