▎ 摘　　要

NOVELTY - Fiber graphene preparation involves adding a mixture solution of graphene oxide into water-soluble reducing agent in a tubular reactor. The water soluble reducing agent is selected from ascorbic acid, sodium ascorbate, sodium citrate, hydrogen iodide, hydrogen bromide, sodium bisulfate, sodium sulfide nonahydrate, ethylene diamine, terephthalic diamine or hydroquinone. The tubular reactor is heated at 60-95 degrees C for reducing graphene oxide into an aqueous graphene gel fiber. The obtained aqueous graphene gel fiber is dried to obtain fiber graphene. USE - Method of preparing fiber graphene (claimed). ADVANTAGE - The method prepares fiber graphene in a simple and cost-effective manner under mild reaction condition with uniform structure and machinery property. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscopic photograph of the fiber graphene.