| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a negative electrode copper alloy foil of a secondary battery which is excellent on an adhesive property to an active material, and a manufacturing method for a negative electrode copper alloy foil of a secondary battery. Ž<P>SOLUTION: The negative electrode copper alloy foil 1 of a secondary battery functioned as a negative electrode for a secondary battery by preparing an active material layer 40 has a copper alloy foil 10 expanding and contracting in response to expansion and contraction in the plane direction of the active material layer 40, and a plating core 20 formed on the surface of the copper alloy foil 10 as a core of copper plating. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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