| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a battery separator excellent in internal resistance.SOLUTION: The battery separator is obtained by compounding a support and a porous ceramic layer formed by containing ceramic fine particles. A theoretical internal porosity of the support is equal to or more than 60% and equal to or less than 75%. A dried coating amount of the porous ceramic layer is equal to or more than 2.0 g/mand equal to or less than 10.0 g/m.</p> |
