Process for preparing a positive electrode material for...

Details Process for preparing a positive electrode material for... Process for preparing a positive electrode material for...

2011-02-15

2011-02-15

Kopec, Mark (Department: 1796)

Compositions

Electrically conductive or emissive compositions

Metal compound containing

C423S179500, C427S115000, C429S223000, C429S231100, C429S231300

Reexamination Certificate

active

07887721

ABSTRACT:
A process for preparing lithium-nickel-manganese-cobalt composite oxide used as a positive electrode material for the lithium ion battery, comprising subjecting a mixture containing a lithium compound and nickel-manganese-cobalt hydroxide to a first-stage sintering and a second-stage sintering. The process includes adding a binder and/or binder solution after the first-stage sintering, and the mixture of the binder and/or binder solution and the product of first-stage sintering is sintered in the second-stage sintering. The tap density and volume specific capacity of the positive electrode material lithium-nickel-manganese-cobalt composite oxide prepared by the process, come up to 2.4 g/cm3and 416.4 mAh/cm3, respectively. Besides, the positive electrode material lithium-nickel-manganese-cobalt composite oxide prepared by the process possesses the advantages of high specific capacity and good cycle stability.

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