| abstract |
The packaging material for a lithium battery of the present invention is composed of a laminate in which a base layer, a first adhesive layer, a metal foil layer, a corrosion prevention treatment layer, a second adhesive layer, and a sealant layer are laminated in this order, and the corrosion The prevention treatment layer contains the rare earth element oxide and 1 to 100 parts by mass of phosphoric acid or phosphate based on 100 parts by mass of the rare earth element oxide, and the second adhesive layer contains an acid-modified polyolefin resin and a polyfunctional isocyanate compound. Consisting of an adhesive composition, in the infrared absorption spectrum of the second adhesive layer, the ratio (Y/ X) is 0.3 or less. |