▎ 摘　　要

NOVELTY - Preparing three-dimensional mesoporous graphene/polyaniline composite material comprises (a) mixing graphene oxide with deionized water, ultrasonically dispersing to obtain graphene oxide dispersion, placing the graphene oxide dispersion in a polytetrafluoroethylene reactor, carrying out hydrothermal reaction for period of time, cooling, vacuum filtering, repeatedly washing with deionized water, and vacuum freeze-drying to obtain three-dimensional graphene, (b) taking the obtained three-dimensional graphene, immersing in a alkaline solution, vacuum freeze-drying, activating the reaction under nitrogen or argon atmosphere, washing with acid and deionized water to obtain three-dimensional mesoporous graphene, and (c) dispersing the obtained three-dimensional mesoporous graphene in a acidic solution, and adding aniline and ammonium persulfate, carrying out in-situ polymerization under ice-salt bath conditions to obtain three-dimensional mesoporous graphene/polyaniline composite material. USE - The material is useful for supercapacitor electrode material, energy storage material and thermal material.