| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide electrolytic solution capable of improving high-temperature characteristics and a battery using the electrolytic solution. <P>SOLUTION: Electrolytic solution containing a solvent and an electrolyte salt is impregnated in a separator 23. A sulfone derivative having O=S=O bond, or a sulfonic acid compound having O=S(=O)-O bond are contained in the solvent, and LiBF<SB POS="POST">4</SB>is contained in the electrolyte salt. Thereby, decomposition reaction of the electrolytic solution can be suppressed even in high temperature environment, and superior characteristics can be obtained even if left in high temperature condition or used in the high temperature condition. <P>COPYRIGHT: (C)2012,JPO&INPIT |
