Preparing method of lithium titanium oxide for anode materials of Lithium ion battery

The present invention relates to a process for producing titanium dioxide (TiO 2 ) powder (first step) by dissolving a titanium source in distilled water to produce a titanium dissolution solution, adding a precipitant and hydrothermal synthesis to produce precipitates and annealing, ; (Li 2 TiO 3 ) by mixing and pulverizing lithium hydroxide (LiOH.H 2 O) powder in the titanium dioxide powder to obtain a lithium titanate precursor (Li 2 TiO 3 ) (Step 3); And a step of firing the lithium titanate derivative to prepare a lithium titanate powder (Li 4 Ti 5 O 12 ) (fourth step). Therefore, the lithium titanate powder (Li 4 Ti 5 O 12 ) used as the anode material of the lithium ion battery is replaced with the inexpensive titanium oxysulfate (TiOSO 4 ) produced by the sulfur process of the titanium light (ilmenite, FeTiO 3 ) The efficiency of the lithium titanate powder production process is greatly increased by using the low firing temperature condition of the lithium titanate derivative prepared by using the starting material and the ion exchange process.