| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device capable of suppressing peeling of a negative electrode active material layer from a negative electrode collector.SOLUTION: The power storage device includes: a negative electrode collector 31 having a through-hole 35; a negative electrode active material layer 32 containing a silicon oxide; and a substrate 34 that is softer than the negative electrode collector 31 and the negative electrode active material layer 32. A negative electrode 30 is so configured that the negative electrode active material layer 32, the negative electrode collector 31, and the substrate 34 are integrally laminated in such a manner that the negative electrode collector 31 is sandwiched between the negative electrode active material layer 32 and the substrate 34. |
