Outer casing material useful for battery, preferably lithium secondary battery, comprises outer layer comprising heat-resistant resin film, metal foil layer, and inner layer with specific melt flow rate, comprising thermoplastic resin film

摘要

Outer casing material comprises an outer layer comprising a heat-resistant resin film, a metal foil layer, and an inner layer comprising a thermoplastic resin film. The outer layer, the metal foil layer, and the inner layer are laminated. The inner layer exhibit a melt flow rate of >= 1 to less than 10. An independent claim is also included for a lithium secondary battery comprising the above outer casing material.