| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheath material for a power storage device capable of maintaining sufficient moldability and having electrolyte resistance which is hard to be deteriorated even if an electrolyte adheres thereto.SOLUTION: There is provided the sheath material for a power storage device in which, on a first surface of a metal foil, a first corrosion prevention layer and a coating layer are provided in this order, and on a second surface of the metal foil, a second corrosion prevention layer, an adhesive layer and a sealant layer are provided in this order. The coating layer contains at least one additive agent selected from a group consisting of a polyvinyl chloride resin whose polymerization degree is 450-3000, a polyvinyl chloride-polyvinyl acetate copolymer and polyvinyl chloride-polyvinyl acetate terpolymer. The content of an additive material is 1-10 mass% based on the total mass of the coating layer.SELECTED DRAWING: Figure 1 |
