Non-aqueous electrolyte battery
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United States of America Patent
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Dec 6, 2016
Grant Date -
Sep 26, 2013
app pub date -
Sep 5, 2011
filing date -
Sep 6, 2010
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Abstract
A non-aqueous electrolyte, lithium-ion secondary battery includes an electrode group in which positive and negative electrode plates are wound via a separator accommodated into a battery container into which a non-aqueous electrolyte is injected. In the positive electrode plate, a positive electrode mixture layer including a lithium transition metal complex oxide is formed at both surfaces of an aluminum foil. A flame retardant layer containing a phosphazene compound as a flame retardant and a polyethylene oxide of a binder having ionic conductivity is formed at a surface of the positive electrode mixture layer. In the negative electrode plate, a negative electrode mixture layer including a carbon material of a negative electrode active material is formed at both surfaces of rolled copper foil. Ionic conductivity is secured by the polyethylene oxide, and the phosphazene compound decomposes when a battery temperature rises due to battery abnormality.
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