| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium battery capable of improving long-term reliability without damaging an electrochemical property like heat resistance or a discharging property even in a severe high temperature environment. <P>SOLUTION: The lithium battery has a positive electrode, a negative electrode, a separator interposed between the electrodes, and nonaqueous electrolyte liquid containing a nonaqueous solvent and electrolyte salt. The nonaqueous solvent contains at least one kind of compound having a boiling point of 200°C or higher, and at least one kind of compound having a boiling point of lower than 200°C out of the compounds shown by general formula (1): X-(O-C<SB>2</SB>H<SB>4</SB>)<SB>n</SB>-O-Y äin the formula, X, Y denote an alkyl group (C1 to C4) independent from each other, n is 1 to 5}. A ratio of the compound shown by general formula (1) to the sum of the total volume in the nonaqueous solvent at 23°C is not less than 95% and not more than 100%. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
