▎ 摘　　要

NOVELTY - A polypyrrole nanotube/graphene nanosheet composite material comprises graphene nanosheet, where the graphene nanosheet is composed of shell layer coated on the outer surface of polypyrrole nanotube, the graphene nanosheet having a size 5-30 nm, and the graphene nanosheet and the polypyrrole nanotube connected by an amide bond the amide bond carbon in the composite material accounts for not more than 6.7% of the total carbon ratio, and partially or completely coated of the polypyrrole nanotubes corresponding to the graphene shell layer. USE - Polypyrrole nanotube/graphene nanosheet composite material for preparation of an energy storage electrode active material that is utilized in flexible super capacitor (claimed). ADVANTAGE - The Polypyrrole nanotube/graphene nanosheet composite material has increased conductivity, improved the capacitance and enhanced charging and discharging circulation stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing a polypyrrole/graphene composite material, which involves, mixing and dispersing a polypyrrole nanotube and a graphene nanosheet having a size 5-30 nm in a solvent at a mass ratio of 10:1-1:10 and adding a catalyst to cause an acylation reaction to obtain an acylation reaction product, washing the acylation reaction product, removing the solvent, catalyst and the unreacted graphene nanosheet, drying and dispersing in deionized water, adding a reducing agent and removing the oxygen-containing group of the graphene shell layer in the reaction product to obtain a reduced product, washing the reduced product with water and drying to obtain the finished product (2) a full-solid state flexible super capacitor comprising a flexible current collector, an electrode active material, and a solid electrolyte.