▎ 摘　　要

NOVELTY - The method comprises growing (S2) a graphene film on a first surface of a metal substrate by a chemical vapor deposition method, cooling the metal substrate, providing (S3) a carbon nanotube film structure on the graphene film, combining the carbon nanotube film structure with the graphene film, coating a polymer layer on the carbon nanotube film structure, combining the polymer layer with the carbon nanotube film structure and the graphene film, and forming stripped electrodes by etching the metal substrate from its second surface that is opposite to the first surface of the substrate. USE - The method is useful for making a graphene/carbon nanotube composite structure. ADVANTAGE - The method is capable of effectively making the graphene/carbon nanotube composite structure with excellent conductivity, improved ductility, increased mechanical strength and high light transmittance. DETAILED DESCRIPTION - The method comprises growing (S2) a graphene film on a first surface of a metal substrate by a chemical vapor deposition method, cooling the metal substrate, providing (S3) a carbon nanotube film structure on the graphene film, combining the carbon nanotube film structure with the graphene film, coating a polymer layer on the carbon nanotube film structure, combining the polymer layer with the carbon nanotube film structure and the graphene film, and forming stripped electrodes by etching the metal substrate from its second surface that is opposite to the first surface of the substrate. The metal substrate has a thickness of 100 nm to 100 mu m. The graphene film is grown on the first surface of the metal substrate by disposing the metal substrate in a reacting chamber, heating the metal substrate to a predetermined temperature (800-1500 degrees C) and supplying a carbon source gas into the reacting chamber. The method further comprises importing the substrate in the reacting chamber during the process of heating the metal substrate to the predetermined temperature, continuously importing the hydrogen gas in the reacting chamber during the formation of the graphene film on the first surface of the metal substrate, and continuously flowing the carbon source gas and the hydrogen gas into the reacting chamber during the process of cooling the metal substrate. A ratio between flow rates of the carbon source gas and the hydrogen gas is 45:2-15:2. The carbon nanotube film structure is made of drawn carbon nanotube film or drawn carbon nanotube films stacked with each other and made by: adhering one drawn carbon nanotube film to a frame along a first direction; removing excess film outside the frame; adhering another drawn carbon nanotube film to the frame along a second direction to overlap the drawn carbon nanotube film; and forming the carbon nanotube film structure, and is treated with an organic solvent. The drawn carbon nanotube film is drawn from a carbon nanotube array, is made by selecting a carbon nanotube segment having a predetermined width from the carbon nanotube array and pulling the carbon nanotube segment at a uniform speed to achieve the uniform drawn carbon nanotube film, and is fixed on the frame during the organic solvent treating process. The drawn carbon nanotube films are treated with a laser having a power density of greater than 0.1x 104 W/m2. The polymer layer and graphene film are combined by a hot-pressing method at 110-120 degrees C. The carbon nanotube film structure is located on a base. The polymer layer contacts the carbon nanotube film structure during the process of combining the carbon nanotube film structure with the graphene film. DESCRIPTION OF DRAWING(S) - The diagram shows a flowchart of a method for making a graphene/carbon nanotube composite structure. Providing metal substrate (S1) Growing a graphene film on the first surface of a metal substrate (S2) Providing carbon nanotube film structure on the graphene film (S3) Forming a graphene/carbon nanotube composite structure. (S4)