▎ 摘　　要

NOVELTY - The method comprises providing a graphene film (106) on a substrate (100), forming a substrate/graphene/carbon nanotube composite structure by combining a carbon nanotube layer (110) with the graphene film located on the substrate, and forming the graphene/carbon nanotube composite structure by removing the substrate from the substrate/graphene/carbon nanotube composite structure. The graphene film is present in contact with the carbon nanotube layer in the substrate/graphene/carbon nanotube composite structure, and is made by a chemical vapor deposition method. USE - The method is useful for making graphene/carbon nanotube composite structure. ADVANTAGE - The method is capable of easily manufacturing the graphene/carbon nanotube composite structure with excellent conductivity, improved ductility, high light transmittance, less heat capacity and desired shape. DETAILED DESCRIPTION - The method comprises providing a graphene film (106) on a substrate (100), forming a substrate/graphene/carbon nanotube composite structure by combining a carbon nanotube layer (110) with the graphene film located on the substrate, and forming the graphene/carbon nanotube composite structure by removing the substrate from the substrate/graphene/carbon nanotube composite structure. The graphene film is present in contact with the carbon nanotube layer in the substrate/graphene/carbon nanotube composite structure, and is made by a chemical vapor deposition method, a mechanical pressure method, a Langmuir-Blodgett method, a solution method or tearing from an oriented graphite using a tape. The mechanical pressure method comprises forming an oxide layer on a first surface (102) of the substrate using a plasma, disposing an oriented pyrolytic graphite having a cleavage surface on the oxide layer of the first surface of the substrate, applying a pressure (98-196 Pa) on the oriented pyrolytic graphite disposed on the substrate, and removing the oriented pyrolytic graphite from the substrate for forming the graphene film on the oxide layer of the substrate. The cleavage surface is present in contact with the oxide layer. The carbon nanotube layer is stacked with the graphene film located on the substrate to form a stacked structure before the combining step. The stacked structure is combined to form an integrative structure by a hot pressing technology or a cold pressing technology. A hot pressing temperature in the hot pressing technology is 70-150 degrees C. The combining step comprises infiltrating an organic solvent into the stacked structure, removing the organic solvent, disposing a macromolecule solution or a molten macromolecule between the graphene film and the carbon nanotube layer, and solidifying the macromolecule solution or the molten macromolecule to form a macromolecule material layer for fixing the graphene film and the carbon nanotube layer together by the macromolecule material layer. The organic solvent is removed by a supercritical carbon dioxide method. The macromolecule solution or the molten macromolecule has a viscosity of greater than 1 Pa.s. The step of removing the substrate comprises oxidizing the substrate using the plasma, and eroding the oxidized substrate using a solution. The substrate/graphene/carbon nanotube composite structure is immersed into the solution after the step of oxidizing the substrate to remove the oxidized substrate. The solution is removed by the supercritical carbon dioxide method after the step of eroding the oxidized substrate. The method further comprises coating a protective layer on the graphene film, forming a protective layer/graphene composite structure by removing the substrate, forming the protective layer/graphene/carbon nanotube composite structure by combining the carbon nanotube layer with the protective layer/graphene composite structure, and forming the graphene/carbon nanotube composite structure by removing the protective layer from the protective layer/graphene/carbon nanotube composite structure. The graphene film is present in contact with the carbon nanotube layer in the protective layer/graphene/carbon nanotube composite structure. The protective layer is removed by a chemical reagent. DESCRIPTION OF DRAWING(S) - The diagram shows a schematic cross-sectional view of a method for making a graphene/carbon nanotube composite structure. Substrate (100) First surface of substrate (102) Second surface of substrate (104) Graphene film (106) Carbon nanotube layer. (110)