NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
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United States of America Patent
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Issued Date -
Jul 31, 2014
app pub date -
Sep 3, 2012
filing date -
Sep 2, 2011
priority date (Note) -
Abandoned
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Abstract
A non-aqueous electrolyte secondary battery capable of improving a high rate discharge property while securing safety is provided. A laminated electrode group 10 is sealed in a laminate film of an outer casing in a lithium-ion secondary battery. A positive electrode plate 14 and a negative electrode plate 15 are stacked alternatively in the laminated electrode group 10. In the positive electrode plate 14, a positive electrode mixture layer W2 containing a lithium manganese complex oxide of a positive electrode active material is formed at both surfaces of an aluminum foil W1. In the positive electrode mixture layer W2, other than the positive electrode active material, a carbon material of a conductor and a phosphazene compound of a flame retardant are dispersed and mixed uniformly. A ratio of a mass of the conductor to that of the flame retardant is set to 1.3 or more. In the negative electrode plate 15, a negative electrode mixture layer containing a negative electrode active material is formed at both surfaces of a rolled copper foil. Electron conductivity in the positive electrode plate 14 is secured by the conductor.
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