▎ 摘　　要

NOVELTY - A laminated cobalt zinc hydroxide-graphene composite super capacitor electrode preparing method involves, dispersing oxidized graphene and surfactant by ultrasonically in aqueous urea solution. The cobalt nitrate hexahydrate and zinc acetate dihydrate is added into the graphene oxide suspension. The precursor solution is transferred to a hydrothermal reaction kettle. The hydrotalcite-like layered cobalt-zinc double hydroxides-graphene composites are deposited on the surface of nickel foam collector, and washed by ultrasonic and dried. USE - Method for preparing laminated cobalt zinc hydroxide-graphene composite super capacitor electrode. ADVANTAGE - The method enables preparing the laminated cobalt zinc hydroxide-graphene composite super capacitor electrode with high specific capacity and better effect of multiplying power performance, in a cost effective manner. DETAILED DESCRIPTION - A laminated cobalt zinc hydroxide-graphene composite super capacitor electrode preparing method involves, dispersing 4-100 mg oxidized graphene and 4-200 mg surfactant by ultrasonically in 40 mL aqueous urea solution having a molar concentration of 2 mol/L to form an oxidized graphene suspension. The cobalt nitrate hexahydrate and zinc acetate dihydrate having a molar ratio of 1:3-3:1 is added into the graphene oxide suspension to form homogeneous precursor solution. The precursor solution is transferred to a hydrothermal reaction kettle while immersing foamed nickel current collector into the precursor solution in the hydrothermal reaction kettle at 120-180 degrees C for 5-10 hours. The hydrotalcite-like layered cobalt-zinc double hydroxides-graphene composites are deposited on the surface of nickel foam collector, and washed by ultrasonic and dried to obtain finished product, where the cobalt nitrate hexahydrate and zinc acetate having a total molar amount of 4x 10-3 mol.