▎ 摘　　要

NOVELTY - Preparing pleated and enriched graphene-nano-diamond composite film comprises (i) dispersing graphene oxide and the nano diamond separately and uniformly in the aqueous solution, and mixing aqueous graphene oxide solution and the diamond aqueous dispersion uniformly by the solution mixing method, so that the graphene oxide and the nano diamond are uniformly dispersed at molecular level; and (ii) carrying out overpressure deposition to form graphene-nano-diamond composite film and a pleating enriched graphene-nano-diamond composite film by high-temperature calcination. USE - The method is useful for preparing pleated and enriched graphene-nano-diamond composite film. ADVANTAGE - The method increases specific surface area by preventing graphene sheet stacking and whole material by increasing wrinkles of the graphene sheet layer and improves thermal conductivity of diamond material and graphene sheets.