▎ 摘　　要

NOVELTY - Preparation of graphene paper involves dissolving graphite oxide in isopropanol, ultrasonically peeling, placing in petri dish, covering with indium tin oxide coated glass or platinum sheet as substrate, heating at 30-40 degrees C for 8-12 hours in constant temperature and humidity chamber until isopropanol is completely volatilized to obtain graphene oxide thin film, coating with substrate as working electrode and platinum sheet as counter electrode, dropping gel electrolyte between electrodes and reducing obtain graphene oxide thin film when - 5 to - 6V is disappeared in cyclic voltammetry map. USE - Method for preparing graphene paper used in energy storage (claimed). ADVANTAGE - The graphene paper has 105 m2/g specific surface area and 12 siemens/cm four-point probe conductivity. DETAILED DESCRIPTION - Preparation of graphene paper comprises taking graphite oxide, dissolving in isopropanol to obtain 0.05-0.15 g/L solution, ultrasonically peeling for 2-3 hours, placing in petri dish, covering with copper sheet, indium tin oxide coated glass or platinum sheet as substrate, heating at 30-40 degrees C for 8-12 hours in constant temperature and humidity chamber until isopropanol is completely volatilized to obtain graphene oxide thin film, coating with substrate as working electrode and platinum sheet as counter electrode, dropping mixture of polymethyl methacrylate swollen with propylene carbonate as matrix and lithium perchlorate as support as gel electrolyte between electrodes, connecting to electrochemical workstation at - 10-0 V potential and 0.05 V/second cyclic voltammetry scanning speed to obtain cyclic voltammetry maps, reducing obtain graphene oxide thin film when - 5 to - 6V is disappeared in cyclic voltammetry map, removing platinum sheet, soaking into ethanol for 8-12 minutes, curing, peeling cured gel electrolyte, soaking in deionized water for 10-20 minutes, removing substrate, soaking in ethanol, air drying and flattening.