Nonaqueous electrolyte secondary cell

Details Nonaqueous electrolyte secondary cell Nonaqueous electrolyte secondary cell

1997-03-18

1999-02-02

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

423599, H01M 450

Patent

active

058662790

ABSTRACT:
A nonaqueous electrolyte secondary cell, wherein a lithium-containing metal oxide capable of binding and releasing lithium is used as a positive electrode, and a nonaqueous electrolyte containing a lithium salt is used as an electrolyte, in which a spinel type lithium manganese oxide which satisfies the formula:
wherein 0.ltoreq.x.ltoreq.0.05, and -0.025.ltoreq..delta..ltoreq.0.050, and wherein the average valency of Mn is within a range of from 3.501 to 3.535, is used as the lithium-containing metal oxide.

REFERENCES:
patent: 4828834 (1989-05-01), Nagaura et al.
patent: 5641465 (1997-06-01), Ellgen et al.
patent: 5683835 (1997-11-01), Bruce
patent: 5693307 (1997-12-01), Bowden et al.
patent: 5716737 (1998-02-01), Hasegawa et al.
Patent Abstracts of Japan, vol. 96, No. 2, Feb. 29, 1996, JP 07 282798, Oct. 27, 1995.
Yuan Gao, et al., Journal of the Electrochemical Society, vol. 143, No. 1, pp. 100-114, "Synthesis and Characterization of Li.sub.1-x Mn.sub.2-x O.sub.4 For Li-Ion Battery Applications", Jan. 1, 1996.
Yuan Gao, et al., Solid State Ionics, vol. 84, No. 1 &2, pp. 33-40, "Correlation Between the Growth of the 3.3 V Discharge Plateau and Capacity Fading in Li.sub.1+x Mn.sub.2-x O.sub.4 Materials", Mar. 1996.

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