▎ 摘　　要

NOVELTY - Graphene material with three-dimensional structure comprises (in wt.%): graphene (10-99) and oxides of manganese, nickel, iron or cobalt (1-90). USE - The graphene material with three-dimensional structure is useful for making a capacitor of 200-800 F/g capacitance and a negative electrode of lithium ion battery of 300-1400 mAh/g capacitance (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene material with three-dimensional structure, comprising: (i) adding the graphene oxide in deionized water, dispersing ultrasonically to prepare a graphene oxide solution with a concentration of 0.5-5 mg/ml, adjusting pH of the solution to 8-11 by aqueous ammonia, stirring ultrasonically, adding nickel nitrate solution, potassium permanganate, manganese acetate solution, ferric chloride solution, ferrous chloride solution, cobalt nitrate solution or manganous nitrate solution into graphene oxide solution, where the weight ratio of graphene oxide solution and metal salt is 1:0.1-100 and the weight concentration of the metal salt solution is 0.1-90%, stirring continuously ultrasonically, adding hydrazine hydrate in a weight ratio of 20-80%, where the weight ratio of hydrazine hydrate and graphene oxide is 7:1-50, continuously performing ultrasonic stirring for 30 minutes to 10 hours to obtain the evenly dispersed solution; and (ii) moving the dispersion solution prepared in step (i) into a constant temperature normal pressure or vacuum drying case at 100-250 degrees C, placing for 1-48 hours, or moving the dispersion solution into the hot water reaction tank, reacting for 1-48 hours at 100-250 degrees C and drying.