Lithium Ion Battery
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United States of America Patent
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Issued Date -
Dec 18, 2014
app pub date -
Aug 20, 2012
filing date -
Feb 29, 2012
priority date (Note) -
Abandoned
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Abstract
A high-input and high-output battery having a large capacity while guaranteeing safety is provided. In a lithium ion battery having an electrode wound group in which a positive electrode, a negative electrode, and a separator are wound and an electrolytic solution provided in a battery container, a discharge capacity of the battery being 30 Ah or more, the positive electrode has a current collector and a positive electrode composite applied to both surfaces of the current collector, and the positive electrode composite has following configuration. The positive electrode composite contains a mixed active material of layered lithium nickel manganese cobalt composite oxide (NMC) and spinel lithium manganese oxide (sp-Mn), a density of the positive electrode composite is 2.4 g/cm3 or more and 2.7 g/cm3 or less, and an application quantity of the positive electrode composite is 175 g/m2 or more and 250 g/m2 or less.
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