Lithium-containing complex oxide and method of producing same

Details Lithium-containing complex oxide and method of producing same Lithium-containing complex oxide and method of producing same

2007-10-30

2007-10-30

Vanoy, Timothy C. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S594400, C423S594600, C423S599000, C423S049000, C423S138000, C423S179500

Reexamination Certificate

active

10510800

ABSTRACT:
A lithium-containing complex oxide exhibits a high performance as a cathode active material of a lithium secondary cell or the like and having a high tap density. A granular lithium-containing complex oxide, such as lithium manganese complex oxide, is made up of “complex oxide grains produced by integrating lithium-rich material grains abnormally grown during a firing reaction with the surfaces of the base grains by sintering.” The number of complex oxide grains is not more than 50 per gram of the complex grains. A metal oxide such as manganese oxide and lithium carbonate not more than 5 μm in average grain size are mixed by means of a mixer which grinds and mixes particles by using a shearing force and heated and fired at a warming rate of not more than 50° C./h., thus producing the lithium-containing complex oxide.

REFERENCES:
patent: 2002/0110518 (2002-08-01), Okuda et al.
patent: 2005/0053545 (2005-03-01), Liu et al.
patent: 5-198301 (1993-08-01), None
patent: 11-185754 (1999-07-01), None
patent: 2000-143246 (2000-05-01), None
patent: 2000-281349 (2000-10-01), None
patent: 2001-307729 (2001-11-01), None
English translation of JP 11-185,754 A published Jul. 9, 1999.
English translation of JP 2000-143,246 A published May 23, 2000.
English translation of JP 2000-281,349 A published Oct. 10, 2000.
English translation of JP 2001-307,729 A published Nov. 2, 2001.
English translation of JP 05-198,301 A published Aug. 6, 1993.

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