▎ 摘　　要

NOVELTY - Preparation of supercapacitor linear electrode involves (a) preparing chitin nanofiber, (b) preparing quaternary mixed solution of chitin nanofiber, graphene oxide, carbon nanotubes and polyaniline, and (c) preparing composite linear electrode. USE - Preparation of supercapacitor linear electrode (claimed). ADVANTAGE - The method prepares supercapacitor linear electrode with excellent charge and discharge cycle performance. The inherent quality of light-weight porous core-shell structure of chitin nanofiber, graphene, carbon nanotubes and polyaniline greatly improves electrolyte diffusion and absorption, makes very small charge transfer resistance and has a higher specific capacitance of 791 F/g at the current density of 0.2 A/g. The charge capacity of supercapacitor linear electrode is still 82.14% after charging and discharging for 3000 times at high current density of 4 A/g.