▎ 摘　　要

NOVELTY - Graphene assembly fiber is prepared by using graphene oxide aqueous solution as spinning solution, using amine compound aqueous solution as coagulation bath, spinning, and performing reduction treatment, where amine compound is aromatic amine compound containing two or more amine group. USE - Graphene assembly fiber used for preparing functional fiber composite material, graphene fiber capacitor, graphene fiber electrode, graphene fiber fabric, conductive fiber, thermally conductive fiber, flexible sensing equipment, conductive graphene component, thermally conductive graphene component, and electromagnetic shielding material (all claimed). ADVANTAGE - The graphene assembly fiber has obtained at low temperature showed very high mechanical properties, with a tensile strength of 3.2 ± 0.2 gigapascal, a Young's modulus of 290 ±54 gigapascal, and an electrical conductivity of 1.5×105 seconds.m-1. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a graphene oxide fiber, which is: prepared by using graphene oxide aqueous solution as spinning solution and amine compound aqueous solution as coagulation bath, spinning to obtain graphene oxide fiber, where the amine compound is an aromatic amine compound containing two or more amine groups; and 2. a method for preparing graphene assembly fiber, which involves: injecting graphene oxide aqueous solution into the amine compound aqueous solution to obtain graphene oxide fiber, and reducing chemically graphene oxide fiber to obtain graphene assembly fiber.