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Method of producing lithium titanate. RU patent 2519840.

FIELD: chemistry.

SUBSTANCE: invention can be used in making lithium cells used in rechargeable batteries. Lithium titanate of formula Li₄Ti₅O_12-x, where 0<x<0.02, is obtained by preparing a mixture of titanium oxide and a lithium-based component, wherein the lithium-based component and titanium oxide are present in the obtained mixture in amounts required to provide atomic ratio of lithium to titanium of 0.8. The lithium-based component includes lithium carbonate powder and lithium hydroxide powder. The obtained mixture is used as a calcination precursor. Further, the mixture is sintered in a gaseous atmosphere containing a reducing agent to form lithium titanate. The sintering step causes a solid-phase reaction between the lithium carbonate powder and titanium oxide and a liquid-solid-phase reaction between lithium hydroxide powder and titanium oxide.

EFFECT: invention enables to obtain lithium titanate having high electron conductivity and electrochemical capacitance.

9 cl, 13 dwg, 2 tbl

IPC classes for russian patent Method of producing lithium titanate. RU patent 2519840. (RU 2519840):

H01M4/48 - of inorganic oxides or hydroxides

C01G23/04 - Oxides; Hydroxides

C01D15/02 - Oxides; Hydroxides

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