▎ 摘　　要

NOVELTY - A nano/micro composite fiber (5) capable of storing electrical energy is fabricated by wet spinning aqueous dispersion of graphene or graphene/carbon nanotube to prepare a microfiber; bundling the microfibers (2) to prepare a microfiber bundle (1); heating the microfiber at 60-100 degrees C under a strong acid to modify the surface of microfibers; wrapping the microfiber bundle with a nanofiber web to prepare a nano/micro composite fiber where the nanofiber web is coated with greater than or equal to 1 materials selected from metal, carbon nanotube, activated carbon, and metal oxide nanoparticle; impregnating the nano/micro composite fiber with an electrolyte (4) to form an electrolyte layer; twisting greater than or equal to 1 pairs of electrolyte-coated nano/micro composite fibers; and sheathing the electrolyte-coated nano/micro composite fiber with insulating material. USE - Fabrication of nano/micro composite fiber for storing electrical energy. ADVANTAGE - The capability of electrical energy storage is remarkably improved as the specific surface area increased. The insulating film of nanofiber web prevents short-circuiting of metal layer with external environment, and leakage of electrolyte, and protects the core from external impact. The nano/micro composite fiber has high performance and mechanical strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for fabricating a nano/micro composite fiber (5) capable of storing electrical energy which involves wet spinning an aqueous dispersion of graphene or graphene/carbon nanotube to prepare a microfiber; bundling microfibers (2) to prepare a microfiber bundle (1); wrapping the microfiber bundle with a nanofiber web to prepare a nano/micro composite fiber, where the nanofiber web is coated with greater than or equal to 1 materials selected from metal, carbon nanotube, activated carbon, and metal oxide nanoparticle; heating the microfiber at 60-100 degrees C under a strong acid to modify the surface of microfibers; impregnating the nano/micro composite fiber with electrolyte (4) to form an electrolyte layer; twisting greater than or equal to 1 pairs of electrolyte-coated nano/micro composite fibers; and sheathing the electrolyte-coated nano/micro composite fiber with insulating material. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the nano/micro composite fiber capable of storing electrical energy. Microfiber bundle (1) Microfibers (2) Functional material (3) Electrolyte (4) Composite fiber (5)