▎ 摘　　要

NOVELTY - Preparing carbon nanotubes-oxidized graphene composite material involves ultrasonically dispersing oxidized graphene in water for 40-60 minutes to obtain oxidized graphene dispersion liquid, and heating oxidized graphene dispersion liquid to 40 degrees C, and then adding 2-ethyl-4-methylimidazole to hot oxidized graphene dispersion liquid. The mixture is ultrasonically dispersed for 40-60 minutes. Carbon nanotubes are added to obtained material, and then ultrasonically dispersed 2-3 hours. Ammonia is added to obtained material for performing hydrothermal reaction at 85-90 degrees C for 7-10 hours. USE - Method for preparing carbon nanotubes-oxidized graphene composite material (claimed). ADVANTAGE - The method enables to prepare carbon nanotubes-oxidized graphene composite material with high electric conductivity and heat conductivity in a cost-effective manner. DETAILED DESCRIPTION - Preparing carbon nanotubes-oxidized graphene composite material involves ultrasonically dispersing oxidized graphene in water for 40-60 minutes to obtain oxidized graphene dispersion liquid, and heating oxidized graphene dispersion liquid to 40 degrees C, and then adding 2-ethyl-4-methylimidazole to hot oxidized graphene dispersion liquid. The mixture is ultrasonically dispersed for 40-60 minutes. Carbon nanotubes are added to obtained material, and then ultrasonically dispersed 2-3 hours. Ammonia is added to obtained material for performing hydrothermal reaction at 85-90 degrees C for 7-10 hours. The reaction product is frozen with liquid nitrogen for 12-14 hours. The frozen material is dried to obtain 2-3 hours to obtain carbon nanotubes-oxidized graphene body. The carbon nanotubes-oxidized graphene body is processed with resin matrix to obtain the final product.