Process for making lithium titanate

Details Process for making lithium titanate Process for making lithium titanate

C - Chemistry, Metallurgy

01

G

C01G 23/00 (2006.01)

Patent

CA 2454324

A process is provided for making lithium titanate of closely controlled particle size in the range 5 nm to 2000 nm. The process includes re-firing lithium titanate under controlled conditions so that crystallites of the desired particle size are grown. The lithium titanate may be derived from any suitable source. A suitable source of lithium titanate can be from a process that includes evaporation of a blend that contains lithium and titanium to form a mixture containing lithium and titanium compounds that are subsequently calcined to form lithium titanate. The blend of titanium and lithium may be derived from a variety of titanium and lithium precursor materials.

L'invention concerne un procédé destiné à fabriquer du titanate de lithium à granulométrie étroitement contrôlée comprise entre 5 nm et 2000 nm. Ce procédé consiste à recuire du titanate de lithium dans des conditions contrôlées de manière que les cristallites de dimension granulométrique souhaitées prennent de l'ampleur. Le titanate de lithium peut être dérivé de n'importe quelle source adéquate. Une source adéquate du titanate de lithium peut être issue d'un procédé consistant à évaporer un mélange contenant du lithium et du titane en vue de former un mélange qui contient des composés de lithium et de titane calcinés ultérieurement de manière à former du titanate de lithium. Le mélange de titane et de lithium peut être dérivé d'une variété de matériaux précurseurs de titane et de lithium.

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