▎ 摘　　要

NOVELTY - Method for preparing carbon nanotube/graphene composite fibers, involves mixing carbon nanotubes with oxygen-containing functional groups and graphene in a solution phase to prepare a spinning solution, injecting the spinning solution into the coagulation bath to form gel fibers through a wet spinning process, and post-processing the gel fibers to obtain the product. USE - The method is used for preparing the composite fibers (claimed), used in smart wear, electromagnetic shielding, and conversion. ADVANTAGE - The method energy storage provides the composite fiber which has compact structure, excellent flexibility and excellent electrical and thermal conductivity, and exists stably at high temperatures.