| 摘要 |
PURPOSE:To improve a charge/discharge cycle characteristic by using a manganese oxide as a positive electrode active material, and trifluoromethan sulfonic acid litium (LiCF3SO3) as solute. CONSTITUTION:In the nonaqueous electrolyte secondary battery in which manganese oxide is made to a positive electrode active material, LiCF3SO3 is used as solute. By the way, the range of 0.5-1.5 mol/l is preferable as the density of LiCF3SO3. Thus when LiCF3SO3 is used as the solute, a trifluoromethan sulfonic acid ion (CF3SO3) is difficult to receive the catalytic action of the manganese oxide. This improves a charge/discharge efficiency or a cycle characteristic with an electrolyte decomposition reaction in a positive electrode particularly at the time of charging considerably constrained. |
