Positive electrode active substance for lithium secondary...

Details Positive electrode active substance for lithium secondary... Positive electrode active substance for lithium secondary...

2008-07-18

2010-11-02

Cantelmo, Gregg (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231950, C429S128000, C252S182100, C423S594600

Reexamination Certificate

active

07824803

ABSTRACT:
A positive electrode active material is produced by firing, as a cobalt source, a mixture of a) substantially spherical large particle size cobalt hydroxide or tricobalt tetraoxide having a sharp particle size distribution, and b) small particle size cobalt hydroxide or tricobalt tetraoxide, in a proportion of from 9:1 to 1:2 as the cobalt atomic ratio, at a temperature of from 700° C. to 1050° C. in an oxygen-comprising atmosphere.

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