| 摘要 |
PURPOSE:To keep the close contact of contents within a container to improve the cycle life and self discharge performance of a battery by closely accommodating contents containing a positive electrode material, a negative electrode material, and an electrolyte in a battery container, sealing a case and a cover, and repeatedly sealing a battery according to the volume change within the battery. CONSTITUTION:Contents containing a positive electrode 4, a negative electrode 6, and an electrolyte are closely accommodated in a battery container comprising a case 2 and a cover 3, and the case 2 and the cover 3 are sealed to form a battery. The battery is repeatedly sealed according to the volume variation of the contents in the container 1 to keep the close contact of contents within the container 1. A lithium alloy is used as a negative electrode 6, and the alloying of lithium is advanced within the battery. Since the volume in the contents is decreased with the advance of lithium alloying, the inner volume of the battery is decreased 1-40% by the second and the following sealing processes to shorten reaction time for alloying lithium and a metal to be alloyed with lithium. The charge-discharge cycle life of the battery is increased and the self discharge performance is also improved. |
