| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery enhancing high-temperature storge characteristics and suppressing increase in thickness of the battery. <P>SOLUTION: In the nonaqueous electrolyte secondary battery formed by housing a positive electrode, a negative electrode, and a nonaqueous electrolyte containing a nonaqueous solvent and an electrolyte salt in an outer packaging, the nonaqueous solvent contains 10-60 vol.% propylene carbonate, and the nonaqueous electrolyte contains 0.3-3.0 mass% vinyl acetate and 1.0-3.5 mass% vinylethylene carbonate. <P>COPYRIGHT: (C)2007,JPO&INPIT |
