| 摘要 |
PURPOSE:To expand the reaction area of a negative electrode, and to improve the pulse closed-circuit voltage property, by furnishing a lithium alloy layer with a diameter larger than that of a lithium layer, at the side opposing to a separator of the lithium layer. CONSTITUTION:At the side opposing to a separator 3 of a lithium layer 2a, a lithium alloy layer 2b with a diameter larger than that of the lithium layer 2a and smaller than the inside diameter of a positive electrode 5 can be furnished. The lithium alloy of the lithium alloy layer 2b is made electrochemically from lithium and a metal alloyable electrochemically. By forming the lithium alloy layer 2b in such a way, the area of the surface opposing to the positive electrode 5 through the separator 3 of the negative electrode 2 is made wider, that is, the reaction area can be made wider, and the pulse closed-circuit voltage can be improved. |
