▎ 摘　　要

NOVELTY - Preparing conductive and thermally conductive graphite film comprises (a) intercalating graphite under the action of expansion agent and sulfuric acid, the gas generated by the decomposition of the expansion agent in sulfuric acid causes the graphite to expand and form expanded graphite, stripping the expanded graphite to obtain weakly oxidized graphite without metal ions, where the expansion agent is persulfide, (b) uniformly mixing weakly oxidized graphite without metal ion and graphene oxide aqueous solution in a mass ratio of 100:2-20 to obtain a mixed solution, performing suction filtration on the mixed solution to obtain a product, and (c) drying and pressing the obtained product to obtain weakly oxidized graphite/graphene oxide composite film, subjecting the obtained weakly oxidized graphite/graphene oxide composite film to high-temperature graphitization treatment. USE - Preparation method of conductive and thermally conductive graphite film is useful ffor electronic equipment i.e. desktop computer, notebook computer, smart mobile phone, etc. ADVANTAGE - The graphite film has good mechanical property, high thickness, high conductivity, tensile strength, and electromagnetic shielding performance of the lifting. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for conductive and thermally conductive graphite film prepared by the above-mentioned method.