METHOD OF OBTAINING LITHIUM TITANATE WITH SPINEL STRUCTURE Russian patent published in 2015 - IPC C01G23/00 C01D15/00 C04B35/462 H01M4/485 

FIELD: chemistry.

SUBSTANCE: to obtain lithium titanate of composition Li₄Ti₅O₁₂ with structure of spinel solution of titanium salt is prepared. As titanium salt chloride and/or sulfate is applied. Ammonium hydroxide is introduced into solution of titanium salt with obtaining hydrated ammonium titanate in solid phase. Solid and liquid phases are separated by filtration. Hydrated ammonium titanate is processed with solution of lithium hydroxide at molar ratio Li:Ti=(1.0-1.04):1.0 and temperature 75-95°C for not longer than 1 hour with obtaining lithium-titanium-containing compound. Separation of said compound is carried out by filtration, with the following incineration at temperature 650-800°C for 0.5-2.0 hours. Obtained lithium titanate is washed with deionised water.

EFFECT: invention makes it possible to reduce lithium hydroxide consumption, reduce duration and power consumption of the process of high pure lithium titanate obtaining, ensure high characteristics of lithium accumulator electrodes, stable at multiple number of charge-discharge cycles.

3 cl, 5 ex