| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary, capable of restraining the generation of self-discharge due to the reaction of the nonaqueous electrolyte with electrodes at the time of charge, having superior charging and discharging efficiency and superior cycle characteristic and capable of being operated at 1.5 V. SOLUTION: This secondary battery is provided with a positive electrode 2 including Li4/3Ti5/3O4 as the active material, a negative electrode 5 including a carbon material for storing and discharging lithium ion, and the nonaqueous electrolyte obtained by dissolving lithium fluoromethane sulfonic acid imide as the electrolyte in the mixture solvent composed of two or more components, including ethylene carbonate. The described mixed solvent includes ethylene carbonate at 10-90 volume %. |
