Method for increasing the reversible capacity of lithium transit

Details Method for increasing the reversible capacity of lithium transit Method for increasing the reversible capacity of lithium transit

1995-01-06

1995-09-12

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429218, 423594, 423599, H01M 1040, C01D 1500

Patent

active

054495776

ABSTRACT:
A method is disclosed for increasing the reversible capacity of lithium transition metal oxide materials for use as cathodes in non-aqueous lithium batteries. The method involves reduction of oxide materials of the form Li.sub.x M.sub.y O.sub.z, wherein M represents transition metals whereby oxygen is removed while still maintaining the original phase of the material. Use of the method of the invention is particularly useful for oxide materials synthesized at low temperatures and where M is Mn.

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M. M. Thackeray, et al., "Spinel Electrodes from the Li-Mn-O System for Rechargeable Lithium Battery Applications", J. Electrochem. Soc., vol. 139, No. 2, Feb. 1992, pp. 363-366.
T. Ohzuxu, et al., "LiMnO2 as Cathode for Secondary Lithium Cell", Chemistry Express vol. 7, No. 3, pp. 193-196 (1992) (not available-Month).
A. Momchilov, et al., "Rechargeable lithium battery with spinel-related MnO2 II. Optimization of the LiMn2O4 synthesis conditions", Journal of Power Sources, 41, (1993) pp. 305-314 (Month not available).

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