▎ 摘　　要

NOVELTY - Manufacturing graphene/carbon nanotube composite material comprises adding graphite oxide into 0.5-5 l deionized water to obtain 1-2 mg/ml graphite oxide solution, then ultrasonically processing for 2-4 hours, adding graphite oxide solution into 0.2-0.5 g carbon nanotube to obtain a mixture, sealing and heating the mixture, stirring magnetically, then filtering and drying. USE - The material is useful as electrode active material in electrochemical capacitor (claimed). ADVANTAGE - The material has high energy storage capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene/carbon nanotube composite material, prepared by above mentioned method.