▎ 摘　　要

NOVELTY - Preparing ordered lignin carbon-carbon nanotube composite material involves: (S1) chemically modifying lignin under alkaline conditions to prepare a modified lignin; (S2) preparing lignin/catalyst precursor by evaporation-induced self-assembly technology; (S3) controlling carbonization and catalytic process of the lignin/catalyst precursor, and producing methane by thermal decomposition of lignin and small molecular organic matter to form self-catalytic reaction for making carbon nanotubes grow in an orderly manner to obtain lignin carbon-carbon nanotube catalyst composite material; and (S4) forming a large number of uniform mesoporous pores by dilute acid etching using a nano-scale catalyst as a hard template to obtain a highly ordered lignin carbon-carbon nanotube substrate with high mesoporosity. USE - The method is useful for preparing ordered lignin carbon-carbon nanotube composite material used for preparing hierarchical porous graphene, which is used in preparation of gas adsorbent, lithium-ion battery anode material, supercapacitor or catalyst carrier (all claimed). ADVANTAGE - The method provides ordered lignin carbon-carbon nanotube composite material, which has high specific surface area, conductivity, and multilevel pores. The composite material provides lithium-sulfur battery with high energy density, volume specific capacity, rate performance and cycle stability.