NOVELTY - The current collector (1) in an electrode for a non-aqueous solvent secondary battery, comprises a first metal layer (100), a second metal layer (200) stacked on a surface of the first metal layer, and a third metal layer (300) formed on a back surface of the first metal layer, which is with respect to the surface, on which the second metal layer is stacked. The first metal layer has a Young's modulus of greater than or equal to 150 and Vickers hardnesses of greater than or equal to 150, which are greater than that of the second metal layer, and has thickness less than that of the second metal layer.    USE - The current collector is useful in an electrode for a non-aqueous solvent secondary battery, which is used in an assembled battery of a vehicle, as a power supply for driving a motor (all claimed).    ADVANTAGE - The current collector having a stack structure avoids occurrence of the wrinkles thus preventing the peeling off active material layers of the electrode and increasing the battery capacity.    DETAILED DESCRIPTION - The current collector (1) in an electrode for a non-aqueous solvent secondary battery, comprises a first metal layer (100), a second metal layer (200) stacked on a surface of the first metal layer, and a third metal layer (300) formed on a back surface of the first metal layer, which is with respect to the surface, on which the second metal layer is stacked. The first metal layer has a Young's modulus of greater than or equal to 150 and Vickers hardnesses of greater than or equal to 150, which are greater than that of the second metal layer, and has thickness less than that of the second metal layer. The metal layer is composed of a same metal as the metal composing the second metal layer. The third metal layer has a Young's modulus of greater than or equal to 100 and Vickers hardnesses of greater than or equal to 100, which are greater than that of the second metal layer but less than that of the first metal layer. An INDEPENDENT CLAIM is included for an electrode for a non-aqueous solvent secondary battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a cross-sectional view of a current collector for a non-aqueous solvent secondary battery.    Current collector (1)    First metal layer (100)    Second metal layer (200)    Third metal layer. (300)