▎ 摘　　要

NOVELTY - Preparing graphene film electrode involves dissolving graphene oxide solid in water by ultrasonic dispersion treatment to obtain 1-2mg/ml graphene oxide dispersion, and placing the graphene oxide dispersion vacuum filtration apparatus to obtain graphene oxide film. The pH value of graphene oxide dispersion is adjusted to 9-11. Areducing agent is added to graphene oxide dispersion, and then stirred at 80-95 degrees C for 1-6 hours. The obtained product is washed with pure water to remove excess reducing agent and accelerator. The washed product is dried to give solid graphene. USE - Method for preparing graphene film electrode (claimed). ADVANTAGE - The method increases performance of graphene film electrode. DETAILED DESCRIPTION - Preparing graphene film electrode involves dissolving graphene oxide solid in water by ultrasonic dispersion treatment to obtain 1-2mg/ml graphene oxide dispersion, and placing the graphene oxide dispersion vacuum filtration apparatus to obtain graphene oxide film. The pH value of graphene oxide dispersion is adjusted to 9-11. Areducing agent is added to graphene oxide dispersion, and then stirred at 80-95 degrees C for 1-6 hours. The obtained product is washed with pure water to remove excess reducing agent and accelerator. The washed product is dried to give solid graphene. The graphene solid is dissolved in 100ml pure water by ultrasonic dispersion treatment to obtain graphene dispersion. Proppant is added to graphene dispersion, and then ultrasonically dispersed to obtain graphene mixture. The graphene mixture is poured into a vacuum filtration apparatus, where the mixture is processed to obtain graphene oxide/graphene composite membrane. The graphene oxide/graphene composite membrane is treated at room temperature, and then immersed in an aqueous hydrogen iodide solution. The graphene oxide/graphene composite membrane is dried at 80-95 degrees C for 0.5-3 hours, and then processed at room temperature to obtain graphene film electrode.