▎ 摘　　要

NOVELTY - Graphene/polyimide-based carbon aerogel comprises graphene oxide, and at least one water-soluble polyimide precursor-polyamic acid. The mass ratio of graphene oxide and polyamic acid, is 2:100-10:100. The aerogel is provided with three holes having mesoporous-, microporous- and macroporous-structure, having higher ratio of surface area and capacity. USE - The aerogel is useful as a catalyst carrier, hydrogen storage materials, adsorbing material for supercapacitors or electrode materials for lithium ion batteries (claimed). ADVANTAGE - The aerogel has high specific surface area, high conductivity, and stable physical-chemical properties. The method does not utilize toxic reagents, preferably formaldehyde. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing aerogel, comprising (i) dispersing graphene oxide in deionized water, and ultrasonically dispersing, to obtain stable dispersion of 4-10 mg/ml graphene oxide aqueous solution; (ii) dissolving polyamic acid solution in graphene oxide aqueous solution, to obtain graphene oxide/polyamic acid solution, where the mass ratio of graphene oxide/polyamic acid is 2:100-10:100; (iii) stirring graphene oxide/polyamic acid solution once, and carrying out sol-gel process, to obtain graphene oxide/polyamic acid hydrogel; (iv) freezing graphene oxide/polyamic acid hydrogel in liquid nitrogen, to obtain solid materials, and carrying out freezing-drying in a freeze-dryer, to obtain graphene oxide/polyamic acid aerogel; (v) subjecting aerogel to thermal imidization reaction under programmed temperature conditions, to obtain graphene/cross-linked polyimide aerogels; and (vi) subjecting graphene/cross-linked polyimide aerogels to high temperature carbonization, to obtain the final product.