▎ 摘　　要

NOVELTY - Preparing graphene/cobalt-nickel bimetallic hydroxide comprises e.g. (1) selecting graphite powder, followed by performing concentrated nitric acid and potassium permanganate oxidation treatment, filtering and using large amount of water to clean; (2) adding the graphite powder into the microwave oven for microwave puffing to obtain the expanded vermiform graphite powder; and (3) placing the resulting expanded graphite powder into N-methylpyrrolidone solvent, ultrasonic vibration processing for 2 hours, and centrifuging, taking upper suspension and used as multilayer graphene. USE - The method is useful for preparing graphene/cobalt-nickel bimetallic hydroxide (claimed). ADVANTAGE - The composite material has easily obtaining raw material, low cost, low cost and good energy storage characteristic effect of electrode, can be applied to the electrode material of the super capacitor and electrochemical catalysis aspects. DETAILED DESCRIPTION - Preparing graphene/cobalt-nickel bimetallic hydroxide comprises (1) selecting the particle size of 1-100 mu m graphite powder, is followed by performing concentrated nitric acid and potassium permanganate oxidation treatment, filtering and using large amount of water to clean graphite powder; (2) adding the resulting graphite powder into the microwave oven for microwave puffing to obtain the expanded vermiform graphite powder; (3) placing the resulting expanded graphite powder into N-methylpyrrolidone solvent, ultrasonic vibration processing for 2 hours, and centrifuging, taking the concentration of 1-10 mg/ml upper suspension, and which is used as a multilayer graphene, (4) adding a cobalt salt and a nickel salt in a molar ratio of 1:9-9:1 into the resulting multi-graphene suspension, where the total molar amount of the cobalt salt and the nickel salt is 0.01-0.1 mol, stirring at room temperature uniformly, namely obtaining the 0.1-1 mol/l precursor, (5) adding the resulting precursor into polytetrafluoroethylene liner reaction kettle, the filling rate is 70-85%, after sealing the reaction kettle, heating to 180~200 degrees C to react for 1-2 hours, and (6) naturally cooling the reaction kettle to the room temperature, taking out the reaction product, after filtering, washing and drying to obtain graphene/cobalt-nickel bimetallic hydroxide.