OUTER PACKAGING MATERIAL FOR BATTERY APPARATUS, AND BATTERY

An outer packaging material for a battery apparatus, the material comprising a base layer (), a bonding layer (), a barrier layer (), another bonding layer (), and a hot-melt adhesive layer (); the bonding layer () is disposed between the base layer () and the barrier layer (); the other bonding layer () is disposed between the barrier layer () and the hot-melt adhesive layer (); the barrier layer () 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.