| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery capable of improving safety and reducing generation of gas without impairing battery characteristics including cycle performance. SOLUTION: In the nonaqueous electrolyte battery wherein a positive electrode including a positive active material, a negative electrode, and a nonaqueous electrolyte containing a lithium salt are put in a casing, the positive active material is a lithium-containing composite oxide represented by the formula LiCo1-xMXO2 [M is at least one kind selected from among transition metal elements and the elements in groups IIA, IIIB, IVB, and VB of the periodic table (excluding Al); and 0<x<=0.05 (particularly, 0.00001<=x<0.05)], and the positive electrode contains, as an additive, yAl2O3 [y is the number of moles of Al2O3 with respect to one (1) mol of LiCo1-xMXO2; and 0<y<=0.05 (particularly, 0.0001<=y<=0.05)]. |
