Lithium-ion secondary battery
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United States of America Patent
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Issued Date -
Dec 3, 2009
app pub date -
Apr 15, 2009
filing date -
Apr 24, 2008
priority date (Note) -
Abandoned
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Abstract
A lithium-ion battery comprises a cathode that includes an active cathode material. The active cathode material comprises a cathode mixture that includes a lithium cobaltate and a spinel type lithium manganate, wherein the lithium cobaltate and the lithium manganate are in a weight ratio of lithium cobaltate:lithium manganate between about 0.95:0.05 to about 0.55:0.45, and wherein a ratio of the mean particle diameter of the lithium cobaltate to the mean particle diameter of the lithium manganate is in a range of between about 1:0.35 and about 1:1.4.
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