▎ 摘　　要

NOVELTY - The method for preparing iron-based alloy nanoparticle modified three-dimensional porous nitrogen-doped graphene composite material, involves (a) dissolving ferric nitrate, other metal nitrates and polyvinylpyrrolidone according to mass ratio of (0.5-1.4):(0.1-1.0):1 in deionized water to form mixed solution, and ultrasonically stirring for 5-10 minutes, (b) placing the mixed solution in a blast oven to be kept warm until completely dried, and then grinding into a powder, (c) transferring the ground powder to crucible, then placing the crucible in a tube furnace and heating at 600-800 degrees C in argon atmosphere at a heating rate of 1-20 degrees C/minute for 1-2 hours, cooling to room temperature and collecting the black foam product as iron-based alloy nanoparticle modified three-dimensional porous nitrogen-doped graphene composite material. The other metal nitrate is selected from cobalt nitrate, nickel nitrate, aluminum nitrate, magnesium nitrate, manganese nitrate and chromium nitrate. USE - Method for preparing iron-based alloy nanoparticle modified three-dimensional porous nitrogen-doped graphene composite material used for energy storage and catalytic application. ADVANTAGE - The method enables economical preparation of reproducible iron-based alloy nanoparticle modified three-dimensional porous nitrogen-doped graphene composite material with shortened production cycle.