| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve charge and discharge characteristics in a nonaqueous electrolytic solution secondary battery provided with a positive electrode, a negative electrode, and a nonaqueous electrolytic solution containing phosphoric acid ester compound as a solvent. <P>SOLUTION: As a solute of the nonaqueous electrolytic solution for the secondary battery containing the phosphoric acid ester compound, a lithium salt which has oxalate complex as an anion is contained, and more preferably 0.01-0.2 mol/liter of lithium-bis (oxalate) borate is contained, and furthermore preferably, vinylene carbonate is contained in the nonaqueous electrolytic solution. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
