▎ 摘　　要

NOVELTY - Preparation of cobaltosic oxide-graphene electrode material involves adequately mixing and grinding cobalt acetate, oxalic acid and oxidized graphene, obtaining cobalt oxalate-oxidized graphene mixture, and calcining the cobalt oxalate-oxidized graphene mixture. The molar ratio of cobalt acetate to oxalic acid is 1:1. The amount of oxidized graphene is 5-30 %mass with respect to total amount of obtained cobaltosic oxide. USE - Preparation of cobaltosic oxide-graphene electrode material used for capacitor. ADVANTAGE - The cobaltosic oxide-graphene electrode material is efficiently prepared with high yield, purity and theoretical specific capacitance, and excellent energy storage property, by a simple method.