| 摘要 |
PROBLEM TO BE SOLVED: To provide a copper alloy collector with high jointing strength with resin, and capable of preventing peel-off at an interface between the collector and the resin, in case insulation and sealing of the collector for a lithium-ion battery or a capacitor and a case with injection molding resin. SOLUTION: The copper alloy collector contains Fe by 0.01 to 0.5% and P by 0.01 to 0.3% in mass% with the rest consisting of Cu and inevitable impurities, with a conductivity of 71 to 95% IACS, and a surface roughness of at least a resin joint part of a maximum height Ry of 1 to 30μm and a ten-point average roughness Rz of 0.1 to 5μm. A surface of a copper alloy plate with a density of deposits with a diameter of 1 to 50 nm of 100 pieces/μm<SP>2</SP>or more is put under etching treatment to be of the above surface roughness, and pores with a diameter of 1 to 50 nm are formed, with a thickness of an oxide film to be 4 to 300 nm. COPYRIGHT: (C)2010,JPO&INPIT |
