| 摘要 |
PURPOSE:To achieve sufficient electric capacity and reduce voltage defective fraction and improve reliability by press-bonding lithium to an opening seal plate to interpose the lithium between the opening seal plate and a negative electrode. CONSTITUTION:Metal lithium 7 is interposed between a negative electrode 5 and an opening seal plate 2 which is a negative electrode current collector. As the opening seal plate 2 consists of a metal, materially the lithium 7 can be strongly and closely bonded to it than to an oxide. Therefore, the lithium 7 is press-bonded to the opening seal plate 2 beforehand, and subsequently a negative electrode additive is placed and an electrolyte is injected, and after a battery is constructed, the lithium 7 is sandwiched and held between the negative electrode additive 5 and the opening seal plate 2 so that the lithium can be doped into the oxide rapidly without peeling off. Thus, sufficient electric capacity can be achieved and voltage defective fraction can be reduced and reliability can be improved. |
