▎ 摘　　要

NOVELTY - Method for preparing lignin carbon-based electrode material doped with multiple atoms involves (a) dissolving aniline in hydrochloric acid to obtain anilinate solution, (b) introducing ligninsulfonate to the anilin solution and mixing uniformly, reacting under the action of oxidant, filtering and washing and drying to obtain a lignine/polyaniline precursor, and (c) pre-carbonizing and activating the lignina/poly anilines precursor to sequentially obtain a multi-atom-doped carbon based electrode material. USE - Preparation of lignin carbon-based electrode material used as capacitor electrode material. Uses include but are not limited to porous carbon, carbon nanotubes, carbon spheres, carbon gel and graphene. ADVANTAGE - The multi-atom-doped lignin carbon-based electrode material has high specific capacitance, and has good cycle stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for lignin carbon-based electrode material doped with polyatoms prepared by method.