▎ 摘　　要

NOVELTY - Preparing reduced graphene flexible conductive film and three-step moderate reduction comprises ultrasonically cleaning the polyethylene terephthalate (PET) flexible base film with distilled water and acetone and drying, weighing a certain amount of reducing substance, adding to a certain concentration of graphene oxide solution, placing into a constant temperature water bath heating stirrer, reacting for a period of time to obtain preliminary reduced graphene oxide, evenly coating the I-rGO solution on the treated PET substrate by scraping method, solidifying to form a film, surface-reducing the graphene oxide film for a period of time using a configured reducing solution of a certain concentration in an environment higher than room temperature, repeating the reduction operation once to obtain a surface-reduced graphene oxide (S-rGO) film, immersing the Al-rGO film in acid for a period of time, washing and drying repeatedly and obtaining a stable structure and low surface resistance. USE - The method is useful for preparing reduced graphene flexible conductive film and three-step moderate reduction used in flexible film sensor, flexible film electrode, antistatic film, electronic, energy, biological and medicine fields. ADVANTAGE - The method: provides the flexible conductive film with excellent conductive performance, low surface resistance, good mechanical performance, and good application value in the field of flexible film electrode; is safe, simple and fast; can be produced in large scale and has good film electric performance, when the light transmittance is 54% and the surface resistance is only 6.23 k/sq. DETAILED DESCRIPTION - Preparing reduced graphene flexible conductive film and three-step moderate reduction comprises ultrasonically cleaning the polyethylene terephthalate (PET) flexible base film with distilled water and acetone and drying, weighing a certain amount of reducing substance, adding to a certain concentration of graphene oxide (GO) solution, placing into a constant temperature water bath heating stirrer, reacting for a period of time to obtain preliminary reduced graphene oxide (I-rGO), evenly coating the I-rGO solution on the treated PET substrate by scraping method at a certain temperature, solidifying to form a film, surface-reducing the graphene oxide film for a period of time using a configured reducing solution of a certain concentration in an environment higher than room temperature, repeating the reduction operation once to obtain a surface-reduced graphene oxide (S-rGO) film, using vacuum evaporation technology to cover the surface of the SrGO film with metal aluminum coating to obtain an Al-rGO film, immersing the Al-rGO film in acid for a period of time, washing and drying repeatedly and obtaining a stable structure and low surface resistance.