▎ 摘　　要

NOVELTY - Preparing graphene oxide and polyaniline-nickel sulfide (GO-PANI-Ni3S2) composite material involves ultrasonically dispersing oxidized graphene in aqueous solution of sodium dodecyl sulfate and aniline for 10-50 minutes to obtain stable and uniform mixed solution. The mixture is stirred in ice water bath and hydrochloric acid is added dropwise to ammonium persulfate and stirred for 10-20hours. The mixture is centrifuged for 3-5 times to obtain polyaniline functionalized graphene. USE - Method for preparing GO-PANI-Ni3S2 composite material used for lithium ion battery cathode (claimed). ADVANTAGE - The method enables to prepare GO-PANI-Ni3S2 composite material which has high charging or discharging capacity and improve performance of the lithium ion battery. DETAILED DESCRIPTION - Preparing graphene oxide and polyaniline-nickel sulfide (GO-PANI-Ni3S2) composite material involves ultrasonically dispersing oxidized graphene in aqueous solution of sodium dodecyl sulfate and aniline for 10-50 minutes to obtain stable and uniform mixed solution. The mixture is stirred in ice water bath and hydrochloric acid is added dropwise to ammonium persulfate and stirred for 10-20hours. The mixture is centrifuged for 3-5 times to obtain polyaniline functionalized graphene. Polyaniline functionalized graphene is dispersed ultrasonically in 1 mole per liter hydrochloric acid solution and water is added. The obtained mixed liquid is stirred at room temperature for 1 hour and kept in a hydrothermal kettle at 180 degrees C for 12 hours to obtain the graphene oxide polyaniline hydroxide i.e. GO-PANI-Ni(OH)2 solution. Graphene oxide polyaniline hydroxide is cooled, poured into conical flask and added with sodium sulfide nonahydrate solution. The solution is centrifuged, washed for 3-5 times and dried to obtain lithium ion battery cathode material polyaniline coated with nickel sulfide.