| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve a nonaqueous electrolyte in a lithium secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolyte including a solute dissolved in a nonaqueous solvent, and prevent deterioration in various characteristics when stored under a high temperature environment. <P>SOLUTION: In a lithium secondary battery including a positive electrode 1, a negative electrode 2 and a nonaqueous electrolyte including a solute dissolved in a nonaqueous solvent, the nonaqueous electrolyte is added with a lithium salt including an oxalate complex as an anion and at least one film forming agent selected from the group consisting of vinylene carbonate, vinyl ethylene carbonate, ethylene sulfite and fluoroethylene carbonate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
