▎ 摘　　要

NOVELTY - Graphene oxide is new. The graphene oxide contains an oxygen-containing functional group such as an epoxy group or a hydroxy group on the surface, but does not have an oxygen-containing functional group such as a lactol group or a carboxy group on the surface. USE - The graphene oxide is used for preparing conductive graphene fibers. ADVANTAGE - The graphene oxide has high heat resistance, with heat stability at 200-450 degrees C (claimed). The graphene oxide does not burn at high temperatures. The method is carried out in air, so the cost is reduced and the method has improved efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (A) producing conductive graphene fibers which comprises (i) preparing a spinning solution containing the graphene oxide, (ii) wet spinning the solution to produce graphene oxide fibers, and (iii) heat treating the graphene oxide fiber in air to reduce it, and (B) conductive graphene fibers produced as above.