| 摘要 |
PROBLEM TO BE SOLVED: To provide a low cost uniaxial drawing separator that is hardly torn when assembling a power storage device and a power storage device capable of obtaining high level of safety by effectively suppressing a short-circuit between a positive electrode and a negative electrode.SOLUTION: The power storage device includes: an electrode unit in which a positive electrode and a negative electrode are laminated through a uniaxial drawing separator; and an electrolyte. At least on one surface of the uniaxial drawing separator, a recess or a projection are included in a direction crossing a drawing direction. The uniaxial drawing separator has the recess or the projection in the direction crossing the drawing direction at least on one surface.SELECTED DRAWING: Figure 1 |
