| 摘要 |
An electric storage device, including: an electrode assembly having at least one protrusion portion, the protrusion portion being formed of an end portion of any one of a positive electrode foil and a negative electrode foil and protruding in a laminated state from a side end of the other electrode foil of the both electrode foils; a current collector having a contact portion in contact with the protrusion portion; and a metal material that joins the protrusion portion by interposing the protrusion portion between the contact portion of the current collector and the metal material, wherein at least an end region in one direction along the opposing face is displaced in a direction away from the contact portion of the current collector than a central region of the opposing face is.
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