Adhesive film for metal terminals, method for producing adhesive film for metal terminals, metal terminal provided with adhesive film for metal terminals, power storage device, and method for producing power storage device

An electrical storage device comprising:

• an electrical storage device element including at least a positive electrode, a negative electrode and an electrolyte;
• an exterior material for electrical storage devices which seals the electrical storage device element;
• and a metal terminal electrically connected to each of the positive electrode and the negative electrode and protruding to outside of the exterior material for electrical storage devices, wherein
• an adhesive film for metal terminal is interposed between the metal terminal and the exterior material for electrical storage devices,
• the adhesive film for metal terminal includes a laminate including at least a resin layer A and a resin layer B, and
• the electrical storage device is unsealed at a location where the resin layer A is laminated in the adhesive film for metal terminal in an environment at a temperature of 100° C. or higher and 130° C. or lower.

An electrical storage device comprising:

• an electrical storage device element including at least a positive electrode, a negative electrode and an electrolyte;
• an exterior material for electrical storage devices which seals the electrical storage device element;
• and a metal terminal electrically connected to each of the positive electrode and the negative electrode and protruding to outside of the exterior material for electrical storage devices, wherein
• an adhesive film for metal terminal is interposed between the metal terminal and the exterior material for electrical storage devices,
• the adhesive film for metal terminal includes a laminate including at least a resin layer A and a resin layer B,
• the resin layer A has a melting peak temperature of 105° C. or higher and 130° C. or lower,
• the resin layer B has a cross-sectional hardness of 15 N/mm2 or more as measured in an environment at a temperature of 110° C.,
• the exterior material for electrical storage devices includes a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer, and
• a melting peak temperature of the heat-sealable resin layer is 130° C. or higher.

An exterior material for electrical storage devices which is used for an electrical storage device,

• the electrical storage device comprising:
• an electrical storage device element including at least a positive electrode, a negative electrode and an electrolyte;
• an exterior material for electrical storage devices which seals the electrical storage device element;
• and a metal terminal electrically connected to each of the positive electrode and the negative electrode and protruding to outside of the exterior material for electrical storage devices, wherein
• an adhesive film for metal terminal is interposed between the metal terminal and the exterior material for electrical storage devices,
• the adhesive film for metal terminal includes a laminate including at least a resin layer A and a resin layer B, and has a function of being unsealed at a location where the resin layer A is laminated in an environment at a temperature of 100° C. or higher and 130° C. or lower,
• the exterior material for electrical storage devices includes a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer, and
• a melting peak temperature of the heat-sealable resin layer is higher than a melting peak temperature of the resin layer A of the adhesive film for metal terminal, and 130° C. or higher.

An adhesive film for metal terminal which is used for an electrical storage device,

• the electrical storage device comprising:
• an electrical storage device element including at least a positive electrode, a negative electrode and an electrolyte;
• an exterior material for electrical storage devices which seals the electrical storage device element;
• and a metal terminal electrically connected to each of the positive electrode and the negative electrode and protruding to outside of the exterior material for electrical storage devices, wherein
• the adhesive film for metal terminal is interposed between the metal terminal and the exterior material for electrical storage devices,
• the adhesive film for metal terminal includes a laminate including at least a resin layer A and a resin layer B, and has a function of being unsealed at a location where the resin layer A is laminated in an environment at a temperature of 100° C. or higher and 130° C. or lower,
• the exterior material for electrical storage devices includes a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer, and
• a melting peak temperature of the heat-sealable resin layer is higher than a melting peak temperature of the resin layer A of the adhesive film for metal terminal, and 130° C. or higher.