GALVANIC ELEMENT

摘要

The invention relates to a galvanic element comprising an anode (4), a cathode (3), a separator (1) lying between said anode and cathode and an electrolyte. In said element, the separator is coated on at least one side with a thin, porous metallic layer. The metallic layer preferably consists of Al, Cu, Ag, V, Ti, Cr, Fe, Ni, Co, or alloys of said metals, or a corrosion-resistant stainless steel. The layer thickness of the metal on the separator (1) lies in particular within a range of 10 nm to 1,000 nm, preferably between 20 nm and 500 nm. The metallic layer is preferably applied to the separator (1) by vapour deposition. In particular, at least one of the electrodes (3, 4) is a lithium intercalating electrode. The metallic layer on the anode side (4) of the separator (1) consists of Cu and on the cathode side (3) consists of Al and the porous separator consists of PP, PE, PVDF, or a combination of said polymers.