▎ 摘　　要

NOVELTY - Preparing graphene and secondary doped polyaniline nanocomposite material comprises e.g. respectively adding graphene and aniline to inorganic acid solution or organic acid solution, stirring evenly to form mixture of aniline and graphene; adding ammonium persulfate to inorganic acid solution or organic acid solution, uniformly preparing an ammonium persulfate solution by stirring; slowly or quickly adding ammonium persulfate solution to a mixture of aniline and graphene, fully stirring, allowing to stand the reaction, obtaining a mixed solution of composite material of graphene and primary doped polyaniline; allowing to stand, adding excess aqueous ammonia solution to mixed solution of the graphene and the primary doped polyaniline to make the mixed solution of the graphene and the primary doped polyaniline exhibit neutral or weakly alkaline, stirring uniformly, allowing to stand to cause dedoping reaction, and obtaining mixed solution of graphene and eigenstate polyaniline. USE - The method is useful for preparing graphene and secondary doped polyaniline nanocomposite material. ADVANTAGE - The method: is simple, and suitable for large-scale production. The nanocomposite material: can overcomes the aggregation of graphene to make it evenly dispersed, and has excellent comprehensive performance. DETAILED DESCRIPTION - Preparing graphene and secondary doped polyaniline nanocomposite material comprises respectively adding graphene and aniline in mass ratio of 1:0.1-40 to 10-50 ml of inorganic acid solution or organic acid solution, stirring evenly to form mixture of aniline and graphene, where the concentration of the inorganic acid solution or the organic acid solution is 0.01-4 mol/l; adding ammonium persulfate to 10-50 ml inorganic acid solution or organic acid solution having concentration of 0.01-4 mol/l, uniformly preparing an ammonium persulfate solution by stirring; slowly or quickly adding ammonium persulfate solution to a mixture of aniline and graphene, fully stirring, allowing to stand the reaction at 0-60 degrees C for 0.5-48 hours, obtaining a mixed solution of composite material of graphene and primary doped polyaniline; allowing to stand at 0-60 degrees C for 0.5-48 hours, adding excess aqueous ammonia solution to mixed solution of the graphene and the primary doped polyaniline to make the mixed solution of the graphene and the primary doped polyaniline exhibit neutral or weakly alkaline, stirring uniformly, allowing to stand for 0.1-6 hours to cause dedoping reaction, and obtaining mixed solution of graphene and eigenstate polyaniline, where the molar concentration of the aqueous ammonia solution is positively correlated with the equivalent concentration of the inorganic acid solution or the organic acid solution used in the primary doping process; again adding a inorganic acid solution or an organic acid solution of 0.01-4 mol/L to the mixed solution of the graphene and the eigenstate polyaniline, uniformly stirring, allowing to stand the reaction at 0-60 degrees C for 0.1-48 hours to cause secondary doping reaction between the graphene and the eigenstate polyaniline composite materials, obtaining a mixed solution of composite material of graphene and secondary doped polyaniline; washing the mixed solution of graphene and secondary doped polyaniline to neutral with deionized water and ethanol respectively, suction filtering, drying and grinding.