▎ 摘　　要

NOVELTY - Preparing hollow graphene fiber by self-curling method comprises (i) injecting and printing the graphene oxide slurry onto a rotating roller to obtain gel-like graphene oxide fiber; (ii) immersing the gelatinous graphene oxide fiber together with a roller into a coagulation bath for coagulation using ethanol, and taking out to obtain a ribbon-shaped graphene oxide fiber; (iii) peeling off the ribbon-shaped graphene oxide fiber from the roller, and drying to obtain hollow graphene oxide fiber; and (iv) reducing hollow graphene oxide fiber with hydroiodic acid solution to obtain hollow graphene fiber. USE - The hollow graphene fiber is useful in supercapacitor for flexible and wear-resistant energy storage device. ADVANTAGE - The hollow graphene fiber has a tensile strength of 190.5 MPa and a tensile deformation of 6.1%, and exhibits a bending resistance of more than 5000 times. The prepared supercapacitor has a specific capacitance of 170.6F g1.