▎ 摘　　要

NOVELTY - Preparing graphene-based ultracapacitor electrode material comprises e.g. placing a anode and graphite foil between a second rotating shaft and first rotating shaft, and providing direct current (DC) power supply, connecting the first and a third rotating shaft and providing DC power supply, where electrochemical reaction is carried out on one side of the graphite foil that is in contact with first rotary shaft forming graphene and placing the first rotating shaft into the electrolyte solution present in the reaction apparatus. USE - The method is useful for preparing graphene-based ultracapacitor electrode material (claimed). ADVANTAGE - The method is energy saving, economical and suitable for large scale preparation; and has simple operation. DETAILED DESCRIPTION - Preparing graphene-based ultracapacitor electrode material comprises placing a anode and graphite foil between a second rotating shaft and first rotating shaft, and providing DC power supply, connecting the first and a third rotating shaft and providing DC power supply, where electrochemical reaction is carried out on one side of the graphite foil that is in contact with first rotary shaft forming graphene, placing the first rotating shaft into the electrolyte solution present in the reaction apparatus, where the periphery of the first shaft is coated with polyvinyl alcohol sponge, then subjecting the graphite foil to unilateral treatment through many directional shaft and then subjecting to aqueous cleaning equipment for cleaning and importing to drying equipment for drying, to obtain the final product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of graphene-based ultracapacitor electrode material (Drawing includes non-English language text).