▎ 摘　　要

NOVELTY - Flexible electrode material comprises an activated carbon cloth on which vanadium pentoxide nanowires are uniformly grown, and the vanadium pentoxide nanowires are coated with graphene. USE - The flexible electrode material is useful for lithium ion batteries. ADVANTAGE - The material has excellent structural stability, high capacity density, high rate and high cycle stability under working conditions and electrochemical performance and stability, and is prepared by simple operation method and adopts mild reaction conditions and economical raw material, and increases the specific surface area of the material, shortens the lithium ion diffusion path, improves the conductivity of the vanadium oxide electrode material, enhances the battery performance, protects the nanowires on the electrode surface from falling off of the active material caused by the dissolution of the electrolyte, and ensures prolonged cycle life of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the material, involving (a) adding ammonium metavanadate, oxalic acid dihydrate and hexamethylenetetramine to water, and evenly stirring to obtain a precursor solution, (b) transferring the precursor solution to a reactor, soaking the activated carbon cloth in the precursor solution, performing hydrothermal reaction at 120-160 degrees C for 60-120 minutes, and reacting to obtain the carbon cloth loaded with multivalent vanadium oxide nanowires, where the activated carbon cloth is a carbon cloth having a large number of oxygen-containing functional groups, (c) washing the carbon cloth, drying, and using a high temperature for phase transformation, so that the multivalent vanadium oxide nanowires are converted into vanadium pentoxide nanowires to obtain a carbon cloth carrying vanadium pentoxide nanowires, and (d) soaking the carbon cloth loaded with vanadium pentoxide nanowires in graphene ink, drying, removing the impurities introduced into the carbon cloth by the graphene ink by high temperature decomposition to obtain graphene-coated carbon cloth with vanadium pentoxide nanowires.