▎ 摘　　要

NOVELTY - Provided is a preparation method for graphene composite material, including: a suspension step used to add a graphene platelet into a solvent for obtaining a graphite suspension, wherein the graphene platelet is a graphene material of multi-layered stack; a peeling step using mechanical force to peel the graphene platelet in the graphite suspension for producing a plurality of single-layered graphene materials so as to obtain a graphene suspension; a separation step used to separate the single-layered graphene material in the graphene suspension from a small portion of unpeeled graphene platelet and then to remove said small portion of unpeeled graphene platelet for obtaining a graphene dispersion; and an activated substance addition step used to add an activated substance into the graphene dispersion so that the activated substance is combined with the single-layered graphene in the graphene dispersion to form a graphene composite material, thereby obtaining a graphene composite material dispersion.