| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aromatic polyamide bag-shaped separator capable of attaining a high output and excellent long-term cycle characteristics even when being used together with an electrode that has a large volumetric change, such as an alloy-based negative electrode, and also having excellent heat resistance.SOLUTION: A bag-shaped separator comprises only aromatic polyamide, while all sides of a rectangle of the separator have a thermal shrinkage at 200°C of -1.5 to 1.0%.</p> |
