▎ 摘　　要

NOVELTY - Preparing compact graphite alkenyl composite material comprises (i) adding dispersion of insoluble components to graphene-based dispersion liquid and stirring to obtain first mixed liquid; mixing insoluble components of the dispersion solvent with water, (ii) adding reducing component into first mixed dispersion obtained in (i) and stirring to obtain second mixed dispersion liquid, (iii) adding second mixed dispersion liquid obtained in (ii) into the hydrothermal reaction kettle for hydrothermal reaction to obtain graphene-insoluble component composite hydrogel, (iv) immersing graphene-insoluble component composite hydrogel obtained in (iii) in deionized water to removing impurities and then removing moisture to obtain processed product, and (v) subjecting processed product into high temperature heat treatment for further removing the oxygen-containing functional group to obtain three-dimensional compact graphene-insoluble component composite material. USE - The method is useful for preparing compact graphite alkenyl composite material. ADVANTAGE - The composite material has higher density.