▎ 摘　　要

NOVELTY - Preparation of nitrogen-doped titanium dioxide-graphene composite material, involves preparing solutions (A), (B) and (C), mixing solution (A) and (B), dripping solution (C) into mixed solution to obtain solution (D), ultrasonically dispersing solution (D), carrying out electrostatic spinning to obtain precursor fiber material, placing precursor fiber material in microwave reactor and performing microwave reaction under nitrogen-oxygen atmosphere. The solution (A) is prepared by dissolving at least one of polyvinylpyrrolidone and polyvinyl alcohol in solvent selected from at least one of deionized water, acetic acid, ethanol and dimethyl formamide. The solution (B) is prepared by dissolving at least one of tetra butyl titanate and isobutyl titanate in solvent selected from at least one of acetic acid, glycol, methyl ether and citric acid. The solution (C) is prepared by dissolving at least one of melamine and urea in acetic acid, adding graphene oxide and dispersing uniformly. USE - Preparation of nitrogen-doped titanium dioxide-graphene composite material used for electrode material (all claimed). ADVANTAGE - The method is effective over traditional direct doping, enhances composite material performance, heating rate is fast and uniform which avoid graphene agglomeration by slowly heating in traditional reaction. The microwave reaction condition reduces graphene oxide quickly and thermally to graphene, and quickly removes residual amorphous carbon, manufactures porous structure. The method flow omits washing, separating and drying of post-treatment product.