Cathode material and non-aqueous electrolyte secondary cell usin

Details Cathode material and non-aqueous electrolyte secondary cell usin Cathode material and non-aqueous electrolyte secondary cell usin

1998-05-28

2000-07-25

Weiner, Laura

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429224, 42923195, H01M 458, H01M 450

Patent

active

060935057

ABSTRACT:
The present invention provides a cathode material for a lithium ion secondary cell having an excellent voltage characteristic and enabling to obtain a high capacity cell although cheaper than LiCoO.sub.2.
The present invention uses as a cathode material a lithium compound Li.sub.x Mn.sub.2 O.sub.4 (wherein x is in the range of 0.ltoreq.x.ltoreq.3) whose oxygen ions are at least partially replaced by negative ions having a greater absolute value of valence than oxygen ion. Such a lithium compound may be, for example, Li.sub.x Mn.sub.2 O.sub.2 N.sub.2.

REFERENCES:
patent: 5449577 (1995-09-01), Dahn et al.

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