▎ 摘　　要

NOVELTY - Preparing graphene/polyaniline composite membrane electrode material comprises (1) preparing polyaniline with two-dimensional nanosheet structure, (2) subjecting the nanosheet polyaniline to surface treatment with a positive charged treatment agent to obtain a positively charged polyaniline, and then self-assembling layer by layer with the negatively charged graphene oxide dispersion liquid by spin coating to form graphite oxide alkene/polyaniline composite film, and (3) subjecting the graphene oxide/polyaniline composite membrane to reduction treatment to obtain a graphene/polyaniline composite membrane electrode material. USE - The method is useful for preparing graphene/polyaniline composite membrane electrode material, which is used in a supercapacitor (claimed). ADVANTAGE - The method: adopts the electrostatic interaction between positive and negative charges as a driving force; makes the positively charged sheet polyaniline and the negatively charged graphene oxide electrostatically attract; establishes multi-layer alternating mixed capacitive layers; and improves the interaction between graphene and the conductive polymer interface, and improves the comprehensive electrochemical performance of the composite electrode material.