▎ 摘　　要

NOVELTY - A graphene fabric electrode and yarn electrode preparing method involves immersing polyester fabric or yarn in acetone for ultrasonic washing, immersing in ethanol for ultrasonic washing and finally immersing in deionized water for ultrasonic washing to obtain a sterilized polyester fiber fabric or yarn, adding stannous chloride to the mixed solvent, followed by adding hydrogen chloride to obtain a sensitizing solution. The sensitizing solution is immersed in decontaminated polyester fabric or yarn and stirring to obtain a sensitized polyester fiber fabric or yarn, where the mixed solvent is formed by mixing equal amounts of methanol and deionized water, obtaining the graphene by the modified Hummers method and the graphene is ultrasonically dispersing in deionized water to obtain a graphene dispersion, immersing sensitized polyester fiber fabric or yarn in the graphene dispersion and drying to obtain the finished product. USE - Method for preparing graphene fabric electrode and yarn electrode in supercapacitor (claimed). ADVANTAGE - The method enables preparing graphene fabric electrode with excellent electrochemical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a use of graphene fabric electrode and yarn electrode for preparing a supercapacitor, which involves assembling the fabric electrode and the yarn electrode into a symmetrical supercapacitor for flexible energy storage.