CURRENT COLLECTORS COMPRISING METALLISED MULTI-LAYER FILMS

A current collector comprising a multi-layer film and a first metal layer, wherein the multi-layer film comprises a polyester substrate layer (B) having a first and second surface, a first heat-scalable layer (A1) disposed on the first surface of said polyester substrate layer and optionally a second heat-scalable layer (A2) disposed on the second surface of said polyester substrate layer. The first metal layer is disposed on the outer surface of the first heat-scalable layer (A1), the multi-layer film has a thickness of no more than 12 μm, and the first metal layer has a thickness of no more than 1000 nm.