▎ 摘　　要

NOVELTY - Preparation of ionic liquid modified graphene/polyaniline composite film comprises configuring ionic liquid modified graphene in polyaniline aqueous dispersion with sulfonic acid group or carboxyl group to obtain aqueous dispersion, soaking substrate in aqueous dispersion for 5-60 minutes, soaking in deionized water for 5-20 minutes under nitrogen or dry air stream, soaking in aqueous substrate for 5-60 minutes, soaking in deionized water for 5-20 minutes under nitrogen or dry air stream, and layering. USE - Method for preparing ionic liquid modified graphene/polyaniline composite film (claimed) used for preparing sensors and ultracapacitors. ADVANTAGE - The composite film has uniform structure, ultra-thin thickness and performance control.