▎ 摘　　要

NOVELTY - Preparation of multi-level channel mesoporous graphene/carbon composite material involves synthesizing high-molecular prepolymer, dissolving surfactant with the high-molecular prepolymer in which spherical micelle is synthesized, oxidizing the resultant product with graphene, carrying out hydrothermal freeze-drying process at 100 degrees C for 20 hours to obtain graphene aerogel, drying the resultant product under inert atmosphere in which surfactant is removed to obtain multi-level channel mesoporous graphene/carbon composite material. USE - Preparation of multi-level channel mesoporous graphene/carbon composite material used for electric double layer capacitor and lithium battery cathode material. DETAILED DESCRIPTION - Preparation of multi-level channel mesoporous graphene/carbon composite material involves synthesizing high-molecular prepolymer, dissolving surfactant with the high-molecular prepolymer in which spherical micelle is synthesized, oxidizing the resultant product with graphene, carrying out hydrothermal freeze-drying process at 100 degrees C for 20 hours to obtain graphene aerogel, calcining the resultant product, drying under inert atmosphere in which surfactant is removed to obtain multi-level channel mesoporous graphene/carbon composite material. The surfactant is non-ionic surfactant, preferably triblock copolymer. The high-molecular prepolymer is oligomer precursor, preferably phenolic resin prepolymer. The mass ratio of spherical micelle and graphene aerogel is 3:1.