Power Storage Device, Barrier Film, Cover Unit, And Method For Producing Cover Unit

Abstract: This power storage device is provided with: an electrode body; an outer package in which the electrode body is sealed; and a barrier film. The outer package comprises: an outer package film which enfolds the electrode body in such a manner that an opening is formed; and a cover member which is disposed at the position of the opening. The cover member has: a first surface that faces the electrode body; a second surface that is on the reverse side of the first surface; and a sealing surface that is connected to the first surface and the second surface. The barrier film is joined to the cover member so as to cover at least a part of the sealing surface.

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