| abstract |
The exterior material for a lithium battery of the present invention is composed of a laminated body in which a substrate layer, a first adhesive layer, a metal foil layer, an anticorrosive treatment layer, a second adhesive layer, and a sealant layer are laminated in this order. The anti-corrosion treatment layer contains a rare earth element oxide and phosphoric acid or phosphate in an amount of 1 to 100 parts by mass based on 100 parts by mass of the rare earth element oxide. The second adhesive layer contains an acid-modified polyolefin resin and Polyfunctional isocyanate compound adhesive composition. In the infrared absorption spectrum of the second adhesive layer, the absorption (X) of CH deformation vibration from CH 3 and the absorption of NH deformation vibration from biuret bonds. (Y) ratio (Y / X) is 0.3 or less. |