Separator for nonaqueous electrolyte battery, and nonaqueous electrolyte battery
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United States of America Patent
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Jan 30, 2018
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app pub date -
Jul 30, 2013
filing date -
Jul 30, 2012
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Abstract
Provided is a separator for a nonaqueous electrolyte battery, which includes a porous substrate and an adhesive porous layer that is provided on at least one side of the porous substrate and contains an adhesive resin. The separator has a pore size distribution such that, as measured by a pore size distribution measurement test, the pore size at the maximum value of the maximum peak is within a range of 0.02 μm to 0.1 μm, and the pore size distribution range value ε defined as follows is 0.4 or less. The pore size distribution range value ε herein is a value calculated by the following equation from pore sizes D90, D10, and D50 corresponding to cumulative pore size distributions of 90%, 10%, and 50%, respectively:
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