▎ 摘　　要

NOVELTY - Ternary composite material preparation involves dissolving graphene oxide (GO) in methanol ultrasonically to form a homogeneous solution, adding zinc nitrate hexahydrate under ultrasonic dispersion into a homogeneous solution, slowly dropping an equal volume of methanol solution containing 2-methylimidazole under stirring uniformly at room temperature, and then centrifuging, washing and drying to obtain template. The obtained template is added into ethanol containing cobalt nitrate hexahydrate and nickel nitrate hexahydrate under stirring, where a precipitant is added at 70-80 degrees C for 0.5-1.5 hours, and then naturally cooled at room temperature, centrifuged, washed, and dried to obtain the ternary composite material. USE - Method for preparing ternary composite material used as an electrode material of supercapacitor (claimed). ADVANTAGE - The method prepares the ternary composite material in a simple, cost-effective and eco-friendly manner with excellent electrochemical properties, such as capacitance performance, rate performance and cycle stability performance.