| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery improved in a charge-discharge cycle life at a high temperature. <P>SOLUTION: The nonaqueous electrolyte secondary battery comprises a positive electrode 4, a negative electrode 6, a separator arranged between the positive electrode 4 and the negative electrode 6 having a degree of stretching of at most 7% in a longitudinal direction, and a nonaqueous electrolyte. <P>COPYRIGHT: (C)2004,JPO |
