▎ 摘　　要

NOVELTY - Preparation of layered lithium-titanium oxide graphene composite involves adding 0.640-0.690 g lithium hydroxide monohydrate, 1.8-2.2 mL hydrogen peroxide and 1.32-1.40 g tetrabutyl titanate to 40 mL deionized water, stirring, providing resultant product into PTFE-lined stainless steel reactor, carrying out hydrothermal reaction, cooling, centrifuging resultant product, washing the resultant product with deionized water and ethanol, and drying the resultant product at 75 plus minus 5 degrees C for 5-6 hours to obtain milky white lithium-titanium oxide powder. USE - Preparation of layered lithium-titanium oxide graphene composite used as cathode material for lithium-ion battery. ADVANTAGE - The lithium-ion battery comprising the layered lithium-titanium oxide graphene composite has excellent charging/discharging cycle characteristics and durability. DETAILED DESCRIPTION - Preparation of layered lithium-titanium oxide (Li4Ti5O12) graphene composite involves adding 0.640-0.690 g lithium hydroxide monohydrate, 1.8-2.2 mL hydrogen peroxide and 1.32-1.40 g tetrabutyl titanate to 40 mL deionized water, stirring the resultant product, providing the resultant product into PTFE-lined stainless steel reactor, carrying out hydrothermal reaction at 150 degrees C for 6 hours, cooling the resultant product to room temperature, centrifuging the resultant product, washing the resultant product with deionized water and ethanol, drying the resultant product at 75 plus minus 5 degrees C for 5-6 hours to obtain milky white lithium-titanium oxide powder, annealing the resultant product at 500 degrees C for 3.8-4.2 hours to obtain pure white lithium-titanium oxide powder, adding 10-12 mg obtained pure white lithium-titanium oxide powder to 1 g/L poly(allylamine hydrochloride) solution, ultrasonically-dispersing the resultant product for 50-70 minutes, and then dispersing the resultant product in graphene oxide solution, stirring the resultant product at 0 degrees C for 4.5-5.5 hours, adding 20 mL 80 wt.% solution of hydrazine hydrate, mixing, heating the resultant product to 98 degrees C for 50-70 minutes, washing the resultant product using deionized water, filtering, and vacuum drying the resultant product at 60 plus minus 5 degrees C for 5-6 hours to obtain black lithium-titanium oxide graphene powder.