▎ 摘　　要

NOVELTY - Preparation of supercapacitor electrode material from cobalt-nickel bimetallic oxide and graphene comprises mixing cobalt salt and nickel salt in water solution, adding ammonia solution to react, adjusting pH value to alkaline, reacting for 1-2 hours, filtering, washing with deionized water to neutralize, and sonicating to obtain 0.2-5 mg/mL cobalt-nickel bimetallic oxide dispersion; mixing resulting dispersion and oxidized graphene solution, stirring, filtering, and drying; and heating resulting material to 250-400 degrees C under argon atmosphere, preserving temperature for 2-6 hours, and cooling. USE - Method for preparing supercapacitor electrode material from cobalt-nickel bimetallic oxide and graphene (claimed). ADVANTAGE - The product has good uniformity, high capacitance, excellent multiplying power performance, and long service life. DETAILED DESCRIPTION - Preparation of supercapacitor electrode material from cobalt-nickel bimetallic oxide and graphene comprises mixing cobalt salt and nickel salt in water solution, adding ammonia solution to react, adjusting pH value to alkaline, reacting for 1-2 hours, filtering, washing with deionized water to neutralize, and sonicating to obtain 0.2-5 mg/mL cobalt-nickel bimetallic oxide dispersion; mixing resulting dispersion and oxidized graphene solution, stirring for 1-4 hours, filtering, and drying to obtain composite precursor, where the mass ratio of dispersion and oxidized graphene is 4-40:1; and heating resulting material to 250-400 degrees C under argon gas atmosphere, preserving temperature for 2-6 hours, and cooling to room temperature.