▎ 摘　　要

NOVELTY - Preparing carbon nano tube-graphene composite fiber involves mixing the graphite powder, chlorosulfonic acid and hydrogen peroxide in mass ratio of 1:150-200:50-100 while stirring to obtain multiple layer graphene solution. The obtained product is washed with water centrifugally. The obtained product is subjected to vacuum freezing and dried to obtain graphene. The graphene and chlorosulfonic acid are reacted to obtain single-wall carbon nano tube. The obtained product is stirred while spinning and filtered to obtain carbon nano tube-graphene composite solution. USE - Method for preparing carbon nano tube-graphene composite fiber for producing of high performance conductive fiber and electrode material lays (claimed). ADVANTAGE - The method enables to prepare carbon nano tube-graphene composite fiber has good electrode material of the super capacitor. DETAILED DESCRIPTION - Preparing carbon nano tube-graphene composite fiber involves mixing the graphite powder, chlorosulfonic acid and hydrogen peroxide in mass ratio of 1:150-200:50-100 while stirring to obtain multiple layer graphene solution. The obtained product is washed with water centrifugally. The obtained product is subjected to vacuum freezing and dried to obtain graphene. The graphene and chlorosulfonic acid are reacted to obtain single-wall carbon nano tube. The obtained product is stirred while spinning and filtered to obtain carbon nano tube-graphene composite solution. The mass ratio of graphene, single-wall carbon nano tube and chlorosulfonic acid is 1:1-8:100-450. The spinning is done by wet spinning method. The obtained product is washed and dried to obtain carbon nano tube-graphene composite fiber.