| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress deterioration in discharge capacity resulting from a lack of a negative active material without unnecessarily increasing a thickness dimension of metallic lithium foil in a nonaqueous electrolytic solution battery with an electrode winding body formed by winding a positive electrode having a large thickness dimension and a short sheet shape together with a negative electrode and a separator. <P>SOLUTION: The negative electrode 4 is formed by bonding two sheets of metallic lithium foil 4a, 4b in a partially superimposed state, or folding any one sheet of the lithium foil 4a in a partially superimposed state. Furthermore, the superimposed part of the foil 4a is disposed at a section in which both faces of the negative electrode 4 face positive electrode sheets 20, 21, respectively. Therefore, lowering in electrical capacity can be surely prevented by effectively suppressing the lack of the negative active material regarding the section with the both faces opposed. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
