| abstract |
The invention provides plastics composite foil for the sheathing of lithium-ion-polymer batteries and lithium-polymer batteries, comprising, arranged in mutual superposition, the following layers: a) a base foil composed of plastic b) a metal foil and c) a functional plastics layer, wherein at least one metal protective layer applied via a physical deposition process, such as vapour deposition processes or sputtering, an example being a chromium layer, has been arranged with thickness of from 0.1 to 1000 nm (nanometres) on the layer b), the metal foil, at least in the direction of the layer c), and/or on the layer c), the functional plastics layer, in the direction of the layer b), the metal foil, and/or in the functional plastics layer. |