Lithium-transition metal composite oxide

Details Lithium-transition metal composite oxide Lithium-transition metal composite oxide

2005-08-16

2005-08-16

Silverman, Stanley S. (Department: 1754)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S220000, C429S223000, C429S224000, C429S231100, C429S231500

Reexamination Certificate

active

06929883

ABSTRACT:
The present invention provides a lithium-transition metal composite oxide having a large volume capacity density, high safety, excellent coating uniformity, excellent charge/discharge cycle durability and excellent low temperature characteristics, and suitable as a positive electrode active material for a lithium secondary cell.A lithium-transition metal composite oxide which is represented by the formula LixM1−yNyO2(wherein 0.2≦x≦1.2, 0≦y≦0.7, M is a transition metal element, and N is a transition metal element other than M or an alkaline earth metal element), wherein in the distribution curve of the cumulative volume particle size of said lithium composite oxide, the inclination of the curve at a cumulative volume fraction of 20% and 80% are at most 9%/μm and at least 3%/μm, respectively, and the average particle size is from 3 to 20 μm.

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