▎ 摘　　要

NOVELTY - A polyaniline graft-reduced graphene oxide/multi-wall carbon nanotube composite material preparing method involves mixing graphene oxide and multi-walled carbon nanotubes in deionized water, adding aniline, ammonia water and ascorbic acid to the mixed dispersion to obtain the product, filtering and drying the product to obtain an aniline-modified reduced graphene oxide/multi-walled carbon nanotubes. The obtained product and aniline monomers are added to hydrochloric acid to obtain aniline and aniline-modified reduced graphene oxide/multi-walled carbon nanotubes. The obtained mixture is added to the ammonium persulfate is dissolved in hydrochloric acid to obtain the product, which is washed with ethanol and deionized water to obtain the polyaniline graft-reduced graphene oxide/multi-wall carbon nanotube. USE - Method for preparing polyaniline graft-reduced graphene oxide/multi-wall carbon nanotube composite material for use in electrochemical energy storage that is utilized in supercapacitor electrode materials. ADVANTAGE - The method enables achieving simple preparation method, mild reaction condition and high specific capacitance. DETAILED DESCRIPTION - A polyaniline graft-reduced graphene oxide/multi-wall carbon nanotube composite material preparing method involves mixing 105 mg graphene oxide and multi-walled carbon nanotubes in 150 mL deionized water and sonicating for 3 hours, adding 1.5 mL aniline and 0.9 mL ammonia water to the mixed dispersion, adding ascorbic acid after stirring the mixed dispersion at 95 degrees C, and continuing stirring at 90 degrees C for 2 hours to obtain the product, washing the product with ethanol and deionized water, filtering and drying the product at 60 degrees C for 24 hours to obtain an aniline-modified reduced graphene oxide/multi-walled carbon nanotubes. The aniline-modified reduced graphene oxide/multi-walled carbon nanotubes and aniline monomers are added to 30 mL of 1 M hydrochloric acid and sonicated for 30 min to obtain aniline and aniline-modified reduced graphene oxide/multi-walled carbon nanotubes. The obtained mixture is stirred at 0 degrees C for 10 minutes, 0.755 g ammonium persulfate is dissolved in 20 mL of 1 M hydrochloric acid and cooled to 0 degrees C, added the resulting mixture dropwise to the aniline and aniline-modified reduced graphene oxide/multi-walled carbon nanotubes, stirring is continued at 0 degrees C and finally continued for 12 hours at room temperature to obtain the product. The product is washed with ethanol and deionized water, filtered and dried the product at 60 degrees C for 24 hours to obtain the polyaniline graft-reduced graphene oxide/multi-wall carbon nano tube. The polyaniline graft-reduced graphene oxide/multi-walled carbon nanotubes obtained is dispersed into an ultrapure water to obtain 2mg/mL dispersion, 10 mu L dispersed droplets are pipette onto the surface of the glassy carbon electrode and dried naturally to obtain a polyaniline graft-reduced graphene oxide/multi-wall carbon nanotube modified electrode. The polyaniline grafted reduced graphene oxide/multiwall carbon nanotube modified electrode is used as a working electrode, the saturated calomel electrode is used as an auxiliary electrode, the platinum sheet electrode is a counter electrode and 1 mol/L of sulfuric acid is used an electrolyte. The polyaniline grafted reduced graphene oxide/multi-walled carbon nanotubes are subjected to constant current charge and discharge tests by electrochemical workstation.