▎ 摘　　要

NOVELTY - Preparing a multi-layer composite transparent conductive film, comprising (i) dissolving graphite in an anionic non-covalent bond surface modifier solution and stirring evenly, transferring to a homogenizer for homogenization chemical treatment and centrifugation to obtain a modified graphene dispersion; (ii) dissolving carbon nanotubes in an aqueous solution of ellagic acid, stirring, sonicating, centrifuging, collecting the upper dispersion and drying, then mixing the obtained powder with an anionic non-covalent surface modifier solution, sonicating, centrifuging, collecting the upper dispersion liquid to obtain the ellagic acid modified single-walled carbon nanotube dispersion; (iii) mixing the modified graphene dispersion with the ellagic acid-modified single-wall carbon nanotube dispersion, stirring evenly to obtain a graphene-carbon nanotube mixture, spraying it on a flexible substrate, and obtaining a film 1 after cleaning and drying. USE - The composite transparent conductive film is used as substitute material of flexible display device, crystal, quartz, glass, gold, silver, copper and graphite. ADVANTAGE - The method does not damage the intrinsic structure of the graphene, to make it furthest keep the conductive characteristics and not be adversely affected. The method reduces the content by enhancing the unit dosage graphene the conductivity of the carbon nano-tube, so that the film has good transparency. The ellagic acid is cheap, which is a non-toxic, low-cost natural polyphenol compound, which can reduce the pollution to the environment.