▎ 摘　　要

NOVELTY - A cobalt-aluminum double hydroxide-reduction-oxidation graphene composite material sheet preparation method involves dissolving cobalt nitrate and aluminum nitrate in water to form mixed solutions. Oxidized graphene is ultrasonically dispersed in water to form luminous yellow solutions. The luminous yellow solutions are added to the mixed solutions to be mixed for 20-30 hours. Hexamethylene tetramine is added to a system for backflow of 12-24 hours at 100-160 degrees C. The composite materials are obtained through filtration, washing and drying. USE - Method for preparing cobalt-aluminum double hydroxide-reduction-oxidation graphene composite material sheet that is utilized for manufacturing a super capacitor electrode material (claimed). ADVANTAGE - The material has pseudo-capacitance energy storage characteristics, better rate capability and circulatory stability performance, high energy density and high power density.