▎ 摘　　要

NOVELTY - Preparation of high-strength graphene fibers comprises adding Hummers graphite oxide in distilled water, sonicating to get graphite oxide dispersion, adding sodium polyacrylate, magnetic stirring to obtain uniform graphene oxide/sodium polyacrylate gel dope; pushing using syringe into coagulation bath, drying for 0.5-1 hour to get graphene oxide fiber; and carrying out hydroiodic reduction for 0.5-1 hour, cleaning and drying. The ratio of sodium polyacrylate and graphite oxide dispersion is 5-20 mg:1 ml. USE - Method for preparing high-strength graphene fibers (claimed) used for flexible energy storage device. ADVANTAGE - The method is simple, inexpensive, and easy to be industrialized. The strong fiber has high quality, large intensity, stable performance and good flexibility.