▎ 摘　　要

NOVELTY - The method for producing graphene-carbon composite nanofiber involves adding crystalline flake graphite and acid to container and uniformly stirring, then adding potassium permanganate, stirring and reacting, adding deionized water and hydrogen peroxide to the mixture, continuously stirring, centrifuging and drying to obtain graphite oxide, adding graphite oxide to N,N-dimethylformamide and ultrasonically dispersing, then adding polyacrylonitrile and magnetically stirring, dissolving polyacrylonitrile in dimethylformamide to obtain spinning solution, transferring the spinning solution to plastic needle tubing installed on the static spinning machine, taking aluminum foil as receiving screen, placing obtained film in air, and performing carbonization in nitrogen. The acid comprises concentrated sulfuric acid and phosphoric acid. USE - The method is useful for producing graphene-carbon composite nanofiber. ADVANTAGE - The method enables production of graphene-carbon composite nanofiber with excellent conductivity and high specific surface area. DETAILED DESCRIPTION - The method for producing graphene-carbon composite nanofiber involves adding crystalline flake graphite and acid to container and uniformly stirring, then adding potassium permanganate, stirring and reacting, adding deionized water and hydrogen peroxide to the mixture, continuously stirring, centrifuging and drying to obtain graphite oxide, adding graphite oxide to N,N-dimethylformamide and ultrasonically dispersing, then adding polyacrylonitrile and magnetically stirring, dissolving polyacrylonitrile in dimethylformamide to obtain spinning solution, transferring the spinning solution to plastic needle tubing installed on the static spinning machine, taking aluminum foil as receiving screen at high voltage of 25 KV and spinning speed of 1 ml/hour, placing obtained film in air, and performing carbonization in nitrogen. The acid comprises concentrated sulfuric acid and phosphoric acid in volume ratio of 9:1. The weight ratio of crystalline flake graphite and concentrated sulfuric acid is 1:120 g/ml. The mass ratio of crystalline flake graphite and potassium permanganate is 1:6.