Adhesive Film, Adhesive Film Manufacturing Method, Power Storage Device, And Power Storage Device Manufacturing Method

Abstract: Provided is an adhesive film for use in a power storage device, wherein: the power storage device has a structure in which a power storage device element is accommodated in a package body formed of a power storage device exterior material; the power storage device exterior material is composed of a laminate including, in order from the outside, at least a base layer, a barrier layer, and thermally fusible resin layers; the power storage device element is accommodated in the package body by thermally fusing together the thermally fusible resin layers of the power storage device exterior material; the adhesive film is used so as to be interposed between the thermally fusible resin layers, at a position where the thermally fusible resin layers are thermally fused; the adhesive film includes at least a resin layer A and an adhesive layer P; the melting peak temperature of the resin layer A is at least 135?; and the melting peak temperature of the adhesive layer P is no more than 100?.

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