▎ 摘　　要

NOVELTY - An electrode material preparation method involves adding graphene oxide and ascorbic acid to poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid solution, obtaining mixed solution, immersing substrate in the mixed solution, maintaining for certain period of time, obtaining substrate coated with ascorbic acid/graphene oxide/ poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid composite film on surface, subjecting the substrate to water washing and acid treatment steps, obtaining substrate coated with reduced graphene oxide/poly(3,4-ethylenedioxythiophene) composite film and electrodepositing aniline on the substrate. USE - Method for preparing electrode material that is utilized for linear supercapacitor (claimed). ADVANTAGE - The method enables preparing electrode material with excellent structural stability during long-term cycling and repeated deformation, and cycle stability, conductive frame structure connected to each other and ability to ensure efficient transport of electrons and ions and penetration of electrolyte, increase surface area of reaction and provide efficient reaction sites for rapid electrochemical reactions. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) an electrode material (2) a linear supercapacitor.