| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery current collector copper alloy rolled foil that is difficult to be plastic-deformed or difficult to be broken because of its high strength (proof strength), furthermore that is also excellent in heat tolerance after heating at 300°C (heating time of one hour) and that has also a high conductivity and can improve the yield during the manufacturing process of battery or the like, and the electrical properties, and to provide a method for producing the same.SOLUTION: A secondary battery current collector copper alloy rolled foil is a copper alloy rolled foil obtained from Cu-Zr-based alloy, formed by rolling, and in which, regarding the crystal orientation of the copper alloy rolled foil, when the crystal orientation densities oriented to Brass orientation {110}<112>, Copper orientation {121}<111>, S orientation {231}<346>, Goss orientation {110}<001> are respectively denoted as B, C, S, and G, then [B/C/(G+S)] is 0.16 to 0.6. A method for producing the same is also provided. |
