▎ 摘　　要

NOVELTY - Preparation of wet-spinning graphene oxide solution involves concentrating graphene oxide solution by centrifugation. USE - Preparation of wet-spinning graphene oxide solution is used for preparing graphene fiber (all claimed). ADVANTAGE - The method enables preparation of wet-spinning graphene oxide solution with stable quality, excellent water solubility and controllable concentration, and without performing ultrasound, dialysis and pre-expansion processes, by simple process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene fiber, which involves adding crosslinking agent to wet-spinning graphene oxide solution, wet-spinning, and reducing obtained graphene oxide fiber.