| 摘要 |
A nonaqueous electrolyte secondary battery in which, using Li x MO<6> (where M is at least one of transition metals, preferably Co or Ni, and 0.05 & X & 1.10) as a positive electrode active material, the charge and discharge of the battery are performed by doping and dedoping lithium. The battery is provided with a means for shutting off current, which operates with the increase of the pressure of the inside of the battery. The means for shutting off current is operated surely by adding lithium carbonate to the positive electrode active material and by covering a part of the surface of the positive electrode with lithium carbonate. The quantity of lithium carbonate is 0.5-15 wt %, and the specific surface area is preferably 0.1 m<2>/g or more. <IMAGE> |
