| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide copper foil or net comprising a Cu-nitrile compound complex formed on the surface thereof, a method for preparing the same, and a lithium secondary battery that comprises an electrode using the copper foil or net as a collector. <P>SOLUTION: The lithium secondary battery including a copper current collector comprising a Cu-nitrile compound complex formed on the surface thereof can prevent corrosion of Cu occurring at a voltage of 3.6 V or higher under overdischarge conditions away from normal drive conditions, and thus can significantly improve capacity restorability after overdischarge. <P>COPYRIGHT: (C)2012,JPO&INPIT |
