▎ 摘　　要

NOVELTY - The preparation method of self-supporting graphene-polyaniline nano-wire composite material involves (1) adding graphite oxide to water, ultrasonically dispersing to obtain graphite oxide dispersion liquid, reducing, and vacuum filtering to obtain self-supporting graphene film, and (2) processing the self-supporting graphene film with sodium dodecyl sulfate solution as a working electrode, platinum sheet as a counter electrode, and current of three sections in the electrolytic solution, and growing polyaniline nanowires on graphene. USE - Preparation method of self-supporting graphene-polyaniline nano-wire composite material for sensing gas (claimed). ADVANTAGE - The method enables preparation of self-supporting graphene-polyaniline nano-wire composite material with improved specific surface area and excellent reliability, by simple and economical process.