Multilayer thin films, methods for manufacturing multilayer thin films, multilayer components, current collectors, electrodes for bipolar batteries, and secondary batteries.

Abstract

A laminated structure is provided, comprising sequentially an Al layer, an adhesive layer, and a Cu layer, wherein the thickness of the Cu layer is 0.5 μm to 5.0 μm, and the indentation hardness of the surface of the Cu layer opposite to the Al layer, based on nanoindentation, is 1.40 GPa or higher. A current collector and a Cu layer for realizing the current collector are provided, which can suppress the degradation of the adhesive layer due to water vapor and electrolyte components, and the reduction of adhesion due to gases generated from the adhesive layer, and are suitable for lightweight construction.