▎ 摘　　要

NOVELTY - Composite nano carbon material powder comprises a mixture of carbon nanotubes and graphene, where the specific gravity between the carbon nanotubes and graphene is 1-200:1, and the carbon nanotubes and graphene are uniformly mixed by a mixing device. USE - Composite nano carbon material powder. ADVANTAGE - The composite nano carbon material powder avoids agglomeration phenomenon and has improved performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite nano carbon material powder, which involves: (A) mixing graphene and carbon nanotube according to the ratio of 1:1-200 to form a mixture; (B) adding the mixture in a stirring device, stirring at a speed of 300 revolutions per minute for 20-30 minutes, and putting graphene and carbon nanotube mixture in a container; (C) adding the mixture in a grinding machine, grinding the mixture at a rotating speed of 200 revolutions per minute for 1-1.5 hours, taking out the mixture and placing in a container; (D) injecting a diluting solvent in container containing mixture, and dispersing graphene and the carbon nanotubes uniformly in the diluting solvent; and (E) heating, evaporating and drying the diluted solvent in which the graphene and the carbon nanotubes are dispersed to obtain final product.