| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolytic solution secondary cell using a separator of which, physical property value is restricted to a specific value, not generating fall off of electrode activator, having excellent cycle property and charge preservation property. SOLUTION: The nonaqueous electrolyte secondary cell has a separator between a positive electrode and a negative electrode, of which, an average hole diameter measured by mercury injection method has substantially two peaks, those average hole diameters range between 0.05μm-0.7μm, the average hole diameter on the surface is 0.3μm or less, and bubble point value is 0.29-0.68 MPa. By the above, the nonaqueous electrolyte secondary cell with improved cycle property and charge preservation property is obtained. COPYRIGHT: (C)2004,JPO |
