Cathode active material, method of preparing the same, and...

Details Cathode active material, method of preparing the same, and... Cathode active material, method of preparing the same, and...

2006-02-21

2009-06-16

Weiner, Laura S (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231200, C429S231300, C429S231600, C429S223000, C429S224000, C429S221000, C423S594300, C423S594400, C423S594500, C423S594600, C423S599000, C423S594150, C252S182100

Reexamination Certificate

active

07547491

ABSTRACT:
Composite cathode active materials comprising a composite oxide and an acid treated with an organic solvent are provided. The composite cathode active materials are prepared by treating mixtures of nickel-based composite oxides and organic acids with organic solvents. The active materials suppress gelation of the electrode slurries for a long period of time, even when the active materials are mixed with fluorine-based polymers, by decreasing the basicity of the slurries and the amount of lithium present on the surfaces of the active materials. As a result, electrode slurries having high stability can be prepared. Cathodes and lithium batteries comprising the slurries have excellent charge-discharge characteristics, including high capacity and excellent high rate discharge characteristics.

REFERENCES:
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