| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary cell capable of improving cycle characteristics, preservation characteristics and load characteristics. <P>SOLUTION: The secondary cell is provided with a positive electrode 21, and a negative electrode 22 as well as electrolytic solution which is impregnated into a separator 23 installed between the positive electrode 21 and the negative electrode 22. The electrolytic solution contains at least one kind of dicarbonate ester compound, dicarboxylic acid compound, disulfonic acid compound, lithium monofluorophosphate and lithium difluorophosphate, and one kind of lithium fluorophosphate, lithium fluoroborate and imide lithium. <P>COPYRIGHT: (C)2011,JPO&INPIT |
