| 摘要 |
A solid electrolyte for a lithium ion secondary battery has a laminate of at least two layers. The thickest layer of the laminate comprises lithium ion conductive crystalline, preferably lithium ion conductive glass-ceramics having a predominant layer of Li 1+x+y (Al, Ga) x (Ti, Ge) 2-x Si y P 3-y O 12 where 0‰ x‰ 1, 0‰ y‰ 1. In a preferred embodiment, thickness of an electrolyte layer comprising the lithium ion conductive glass-ceramics is 150 µm or below and thickness of an electrolyte layer which does not contain lithium ion conductive glass-ceramics or contains only a small amount of lithium ion conductive glass-ceramics is 50 µm or below. |
