▎ 摘　　要

NOVELTY - Preparing graphene fibers, comprise subjecting graphene oxide and amino-modified triiron tetroxide to cross-linking reaction under the catalysis of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride to obtain magnetic graphene oxide, subjecting magnetic graphene oxide to wet-spinning under magnetic field to obtain graphene oxide fibers and reducing graphene oxide fibers to obtain the final product. USE - The method is useful for preparing graphene fibers. ADVANTAGE - The method produces product having an elongation of up to 50%, higher than the existing graphene fiber (elongation of about 10%), high strength, high conductivity and good mechanical properties.