▎ 摘　　要

NOVELTY - Fiber-type double-stranded flexible graphene fiber supercapacitor comprises a graphene fiber core layer, a polymer electrolyte layer disposed around the core layer, and an outer layer of graphene fibers, where the coaxial body of the graphene fiber core layer and the polymer electrolyte layer and the graphene outer layers of the fibers are intertwined to form a double helix structure. USE - Fiber-type double-stranded flexible graphene fiber supercapacitor used for energy storage and flexible materials. ADVANTAGE - The fiber-type double-stranded flexible graphene fiber supercapacitor has simple and easy operation, high efficiency, low cost, high specific capacitance and energy density, good flexibility, and high specific capacitance of the capacitor, and is capable of being woven and easy to be enlarged. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing a fiber-optic double-stranded flexible graphene fiber supercapacitor, which involves forming first liquid stream by spinning solution, forming second liquid stream by gel electrolyte aqueous solution, injecting third liquid stream with spinning solution simultaneously into the coagulation bath, distributing second liquid stream around the first liquid stream, and rotating third liquid flow and a coaxial liquid fluid formed by the first liquid flow and the second liquid flow axially to each other to form a fiber-type double-stranded flexible graphene fiber supercapacitor, where spinning solution comprises uniformly dispersed graphene oxide and a reducing agent, and the gel electrolyte aqueous solution comprises a high molecular polymer; and (2) a fiber-type double-stranded flexible graphene fiber supercapacitor preparation system, which comprises spinning needle comprising a first liquid flow channel, a second liquid flow channel and a third liquid flow channel for respectively extruding the first liquid flow, the second liquid flow, the third liquid flow, where the second liquid flow channel is distributed around the first liquid flow channel, the third liquid flow channel is parallelly arranged in parallel with the coaxial channel formed by the first liquid flow and the second liquid flow, the rotating device is used to drive the third liquid flow and the first liquid coaxial liquid fluid formed by the flow and the second liquid flow rotates axially to each other, coagulation bath is provided for simultaneously receiving the first liquid stream, the second liquid stream, and the third liquid stream extruded by the spinning needle.