OUTER-PACKAGE MATERIAL FOR SECONDARY BATTERY, SECONDARY BATTERY, AND METHOD FOR MANUFACTURING OUTER-PACKAGE MATERIAL FOR SECONDARY BATTERY

摘要

A secondary battery packaging material according to the present invention includes: a substrate layer having a first surface and containing polyester or polyamide; a metal foil layer laminated on the first surface of the substrate layer; an anti-corrosion treatment layer laminated on the metal foil layer; an adhesive layer laminated on the anti-corrosion treatment layer and containing two or more polyolefins; and a heat-sealable resin layer laminated on the adhesive layer. Of the two or more of polyolefins, a first polyolefin having a highest melting temperature has a melting temperature of from not less than a heat-resistance imparting temperature to not more than a critical substrate layer thermal deterioration temperature; and of the two or more of polyolefins, a second polyolefin having a lowest melting temperature has a melting temperature of from not less than a critical heat-resistance temperature to not more than a lamination temperature.