| 摘要 |
PURPOSE:To provide a current collector which does not react with lithium and has a low electric resistivity and to offer a lithium secondary battery excellent in the electromotive force and the cycle characteristic. CONSTITUTION:A metallic material A is provided whose electric resistivity at 20 deg.C is below 5X10<-8>OMEGA.m while another metallic material B has a reactivity with lithium which is lower than that of the metal material A, and a current collector S for a lithium secondary battery is constructed by forming a layer consisting of the metallic material B on that surface of the metallic material A which is to be joined with a negative electrode. The collector S is joined with the negative electrode. Thereby deterioration of the lithium negative electrode and drop of the electromotive force are prevented, and a resultant lithium secondary battery is excellent in the cycle characteristic and is equipped with a high electromotive force and high capacity. |
