| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode body in which concentration of the load on a part of a separator can be minimized while enhancing adhesion of an active material and the amount of active material per unit area, by providing a protrusion on the circumference of a through hole provided in a metal sheet, and to provide a secondary battery and a vehicle.SOLUTION: In an electrode body 21 where a positive electrode sheet 24 having active material layers 26 formed on both surfaces of a metal foil 24a, and a negative electrode sheet 25 having active material layers 26 formed on both surfaces of a metal foil 25a are layered with a separator 23 interposed therebetween, a plurality of holes 30 are formed in each metal foil 24a, 25a. In each metal foil 24a, 25a, only one surface of both the surfaces is a protrusion formation surface (outer side face M1) where a wall 31 is formed on the circumference of the hole 30, and the positive electrode sheet 24 and negative electrode sheet 25 are layered while directing the protrusion formation surface in the same lamination direction. |
