Lithium ion secondary battery and method for manufacturing the same
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United States of America Patent
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May 15, 2018
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app pub date -
Mar 9, 2016
filing date -
Mar 25, 2015
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Abstract
A lithium ion secondary battery according to an embodiment of the present disclosure includes: a positive electrode extending along a first direction; a negative electrode extending along the first direction and disposed opposite to the positive electrode along a second direction orthogonal to the first direction; and a separator with a crosslinked structure, extending along the first direction and provided between the positive electrode and the negative electrode. The separator includes an opposite region opposite to the positive electrode and the negative electrode along the second direction, and a surplus region not opposite to the positive electrode and/or the negative electrode along the second direction, and the surplus region has lower porosity than the opposite region.
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