▎ 摘　　要

NOVELTY - Method for preparation of fluorinated graphene hydrogel material, involves adding polytetrafluoroethylene and graphene oxide solution in hydrothermal reaction kettle, adding hydrofluoric acid solution, mixing graphene oxide with aqueous solution of hydrofluoric acid, covering and sealing, transferring the solution to muffle furnace, heating, taking out the obtained product, immersing in deionized water, regularly exchange the deionized water, until deionized water reaches neutral and obtaining fluorinated graphene hydrogel material. USE - Method for preparation of fluorinated graphene hydrogel material for preparation of electrode (claimed). ADVANTAGE - The method enables simple preparation of fluorinated graphene hydrogel material at low cost and high yield. In the three-electrode system, the current density of the mass ratio of capacitance is 220 Fg-1. In the two-electrode system, the energy density is greater than or equal to 5.0 Whkg-1. DETAILED DESCRIPTION - Method for preparation of fluorinated graphene hydrogel material, involves adding 0.5-2.0 mg/mL polytetrafluoroethylene and graphene oxide solution in hydrothermal reaction kettle, adding hydrofluoric acid solution, mixing graphene oxide with aqueous solution of hydrofluoric acid in a volume ratio of 50-12.5:1, covering and sealing, transferring the solution to muffle furnace, heating at 120-180 degrees C for 6-24 hours, taking out the obtained product, immersing in deionized water, regularly exchange the deionized water, until deionized water reaches neutral and obtaining fluorinated graphene hydrogel material. An INDEPENDENT CLAIM is included for a preparation of electrode, which involves cutting hydrogel fluorinated graphene sheet into a thickness of 1-5 mm, wrapping with filter paper to remove excess moisture to obtain fluorinated graphene hydrogel electrode material and soaking fluorinated graphene hydrogel electrode material in the electrolyte system to obtain allyl hydrogel materials, after undergoing test performance in two-electrode system and three-electrode system. The electrolyte is 6 molL-1 potassium hydroxide solution.