▎ 摘　　要

NOVELTY - Preparation of lignin-based nanocarbon fiber, involves mixing graphene material/polyvinyl alcohol mixed solution and lignin alkali solution to obtain a spinning solution, spinning the solution into a lignin fiber film, solidifying the film, and carbonizing. The graphene material comprises graphene, biomass graphene, graphene oxide, and/or and their layered structures. USE - Preparation of lignin-based nanocarbon fiber for electrodes (all claimed). ADVANTAGE - The method provides lignin-based nanocarbon fiber having excellent mechanical property and conductivity.