| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic electrolyte secondary battery having high capacity and excellent load characteristics by using lithium titanate as a positive active material. <P>SOLUTION: In the organic electrolyte secondary battery having a positive electrode using lithium titanate as the positive active material, a negative electrode using a lithium alloy or a material capable of inserting and releasing a lithium ion as a negative active material, and an electrolyte prepared by dissolving a lithium salt in an inorganic solvent, as the lithium titanate, lithium titanate represented by general formula Li<SB>4-x</SB>Mg<SB>x</SB>Ti<SB>5</SB>O<SB>12</SB>(0.05≤x≤0.9) obtained by replacing a part of lithium with magnesium is used. In the lithium titanate represented by general formula L<SB>4-x</SB>Mg<SB>x</SB>Ti<SB>5</SB>O<SB>12</SB>, x is preferable to be 0.1-0.5. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
