| 摘要 |
PURPOSE:To obtain a long service life by preventing an increase of the inner resistance to an overcharge, and a liquid leakage owing to a corrosion of the positive electrode, and to prevent a case swelling in an overcharging. CONSTITUTION:This nonaqueous electrolyte secondary battery is provided with a positive electrode 5 including LiCoO2, LiMn2O4, and the like, and a negative electrode 6 including either an lithium metal, a lithium alloy, or a carbon material which can store and discharge lithium ions, and the inner surface of a positive electrode can 1 is made of an aluminum-clad material of a high solubale voltage. As a result, even though an overdischarge is generated, the metal of the positive electrode can 1 is never seperated on the surface of a negative electrode, so as to prevent an increase of the inner resistance of the battery. Furthermore, the positive electrode can 1 has a sufficient strength, and a case swelling in an overdischarging can be prevented. And a mass production can be realized at a low cost while improving the battery performance. |
