▎ 摘　　要

NOVELTY - Preparation of composite conductive agent, involves weighing carbon nanotube, graphene and acetylene black, adding ethanol solution, adjusting pH value of solution with nitric acid, organically bonding carbon nanotube-graphene-acetylene blacks, performing pi - pi bond and Van der Waals force interaction between the materials to obtain a carbon nanotube-graphene-acetylene black three-dimensional conductive agent solution, drying hybrid conductive agent solution and grinding dried solid material. USE - Preparation of composite conductive agent utilized for preparing lithium battery positive electrode (claimed). DETAILED DESCRIPTION - Preparation of composite conductive agent, involves (a) using carbon nanotube, graphene and acetylene black in a mass ratio of 5:5:90, weighing the carbon nanotube-graphite-acetylene black carbon material, adding 15% of ethanol solution, adjusting pH value of the solution with nitric acid to make pH value 6, (b) organically bonding or combining carbon nanotube-graphene-acetylene blacks by using high speed dispersion and strong ultrasonic auxiliary vibration process, performing pi - pi bond and Van der Waals force interaction between the materials to obtain a carbon nanotube-graphene-acetylene black three-dimensional conductive agent solution, (c) drying the hybrid conductive agent solution in a vacuum oven at 85 degrees C for 24 hours and grinding the dried solid material into a powder. An INDEPENDENT CLAIM is included for preparation of lithium battery positive electrode.