▎ 摘　　要

NOVELTY - Preparing highly conductive nano-carbon/metal composite fiber comprises providing carbon nanomaterials, where the carbon nanomaterial comprises carbon nanotubes and/or graphene, dispersing the nano-carbon material together with the macromolecular surfactant and the small molecular surfactant in water to obtain spinning dope, injecting the spinning dope into rotating coagulation bath for liquid phase spinning to obtain carbon nanofibers containing macromolecular surfactant, adding metal source composite and reducing agent to the coagulation bath to carry out reduction reaction, so that the metal element therein is reduced by the reducing agent, depositing the generated metal particles on the surface of the carbon nanofibers containing the macromolecular surfactant to obtain metal composite carbon nanofibers, and subjecting the metal composite carbon nanofibers to hot pressing to obtain high-conductivity carbon nanofibers/metal composite fibers. USE - The method is useful for Preparing highly conductive nano-carbon/metal composite fiber. ADVANTAGE - The method: uses two surfactants to mix and co-disperse the nano-carbon material; can achieve the dispersion effect and at the same time introduce suitable content of metal particle growth sites; greatly improves the electrical conductivity of the nano-carbon fiber; and has excellent electrical conductivity stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for highly conductive nano-carbon/metal composite fiber prepared by the preparation method, comprising nano-carbon fiber and metal particles compounded with the nano-carbon fiber, where the particle size of the metal particles is 2-300 nm, the content of metal particles in the highly conductive nano-carbon/metal composite fiber is 0.01-50 wt.%, and the electrical conductivity of the highly conductive nano-carbon/metal composite fiber ranges from 0.05-1x108 S/minute.