Outer packaging material for battery apparatus, and battery

Abstract

An outer packaging material for a battery apparatus, the material comprising a base layer (1), a bonding layer (2), a barrier layer (5), another bonding layer (7), and a hot-melt adhesive layer (8); the bonding layer (2) is disposed between the base layer (1) and the barrier layer (5); the other bonding layer (7) is disposed between the barrier layer (5) and the hot-melt adhesive layer (8); the barrier layer (5) is composed of a single layer or multiple layers of aluminum alloy foil; the aluminum alloy foil composition and the mass percentage thereof comprises over 1.2% Fe content and over 1% Mg content; after undergoing annealing treatment, a large amount of Mg will precipitate out from within the aluminum foil, and the ratio of the precipitated Mg amount to a precipitated Al amount is between 2-4.

Dependencies are inferred from the claim text.