Solid state synthesis of lithium ion battery cathode material

Details Solid state synthesis of lithium ion battery cathode material Solid state synthesis of lithium ion battery cathode material

2007-04-30

2009-02-10

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S594400, C423S594600, C423S599000, C423S594150, C429S223000, C429S224000, C429S231100, C429S231300, C429S231950

Reexamination Certificate

active

07488465

ABSTRACT:
Single-phase lithium-transition metal oxide compounds containing cobalt, manganese and nickel can be prepared by wet milling cobalt-, manganese-, nickel- and lithium-containing oxides or oxide precursors to form a finely-divided slurry containing well-distributed cobalt, manganese, nickel and lithium, and heating the slurry to provide a lithium-transition metal oxide compound containing cobalt, manganese and nickel and having a substantially single-phase O3 crystal structure. Wet milling provides significantly shorter milling times than dry milling and appears to promote formation of single-phase lithium-transition metal oxide compounds. The time savings in the wet milling step more than offsets the time that may be required to dry the slurry during the heating step.

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