▎ 摘　　要

NOVELTY - A graphene-ionic liquid composite material preparing method involves utilizing chloride graphite intercalation mixture agent in a sealed container. The chloride graphite intercalation mixture is heated at 460-550 degrees C and incubated for 2 hours to obtain mixture. The mixture is cooled to room temperature followed by washing and drying the mixture to obtain plug layer of graphite, placing the plug layer of graphite in ionic liquid at 150-300 degrees C, and centrifuging the mixture in constant magnetic field for 10-100 minutes to obtain graphene-ionic liquid composite material. USE - Method for preparing a graphene-ionic liquid composite material. ADVANTAGE - The method enables preparing the graphene-ionic liquid composite material with better energy storage property. DETAILED DESCRIPTION - A graphene-ionic liquid composite material preparing method involves utilizing chloride graphite intercalation mixture agent at mass ratio of 1:0.8-1.2 in a sealed container. The chloride graphite intercalation mixture is heated at 460-550 degrees C and incubated for 2 hours to obtain a mixture. The reactor is cooled to room temperature followed by washing and drying the mixture to obtain plug layer of graphite to volume ratio of 1:10-100 ml, placing the plug layer of graphite in ionic liquid at 150-300 degrees C and centrifuging the mixture in constant magnetic field parallel to electric field for 10-100 minutes to obtain graphene-ionic liquid composite material. An INDEPENDENT CLAIM is included for a method for preparing super capacitors, which involves placing graphene-ionic liquid composite material in a mold for applying a constant pressure, cooling the graphene-ionic liquid composite material to room temperature to obtain graphene-ionic liquid composite electrode sheet and membrane, immersing the membrane in ionic liquid to obtain a separator containing ionic liquid, assembling the separator, graphene-containing ionic liquid and graphene-ionic liquid composite electrode sheet to obtain batteries and coating the batteries to obtain super capacitors.