| 摘要 |
PROBLEM TO BE SOLVED: To suppress the reaction of a positive electrode material with a nonaqueous electrolyte over a long period, and provide a lithium battery excellent in cycle characteristic in which the lowering of the service capacity is minimized even when charging and discharging are repeated by covering the particle surface of a lithium transition metal compound oxide used in a positive electrode with a compound containing lithium and boron. SOLUTION: This lithium battery has a positive electrode 1 using a lithium transition metal compound oxide, a negative electrode 2 using a lithium material or a material capable of storing and releasing lithium ion, and a nonaqueous electrolyte. At least a part of the particle surface of the lithium transition metal compound oxide used in the positive electrode 1 is covered with a compound containing lithium and boron. Thus, it is suppressed that the nonaquous electrolyte is reacted with the lithium transition metal compound oxide of the positive electrode and decomposed, and the drop of the service capacity is moderated to improve the cycle characteristic. |
