▎ 摘　　要

NOVELTY - Preparing functionalized graphene based on ion exchange comprises (i) adopting wet spinning method, graphene oxide aqueous solution used as spinning liquid, and injecting spinning liquid into coagulation bath using syringe pump to obtain graphene oxide fiber, (ii) immersing collected graphene oxide fiber in metal salt solution, and (iii) placing muffle furnace at high temperature reduction under inert gas atmosphere. USE - The method is useful for Preparing functionalized graphene based on ion exchange (claimed).