| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery capable of improving the cycle characteristics. <P>SOLUTION: The secondary battery is provided with an electrolytic solution, together with a positive electrode 21 and a negative electrode 22, and the electrolytic solution is impregnated in a separator 23 provided between the positive electrode 21 and the negative electrode 22. The solvent of the electrolytic solution contains 1, 3-dioxole or a derivative of 1, 3-dioxole. As compared with the case in which these compounds are not contained, chemical stability of the electrolytic solution is improved and decomposition reaction is suppressed, thereby, even if charge and discharge are repeated, discharge capacity is hardly deteriorated. <P>COPYRIGHT: (C)2009,JPO&INPIT |
