| 摘要 |
This negative electrode contains a negative electrode active material. This negative electrode active material contains lithium, a first element that is silicon or tin, and a second element that is oxygen or fluorine. This negative electrode active material does not substantially contain a compound phase of the first element and the lithium, while containing an amorphous phase containing the first element and the second element; and the lithium forms an ionic bond with the second element. |
