LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery capable of suppressing degradation by temperature or solvent of a processing process by using a binder and a separator of aromatic polyamide excellent in thermal resistance and solvent resistance and capable of exhibiting excellent battery characteristics even when used at high temperatures.

SOLUTION: The lithium ion secondary battery has an electrode with an active material layer on a collector and the separator. Both the active material layer and the separator include aromatic polyamide.

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