| 摘要 |
PURPOSE:To improve a characteristic of a charge-and-discharge cycle, by arranging a porous collector in a negative electrode made of an alloy of lithium- aluminum. CONSTITUTION:A negative electrode can 1 is located in a state inverted up and down to the state shown in a figure, and a lithium plate 2a1 is press-jointed to a collector 4 on a negative electrode side which is spot-welded on an inner surface of the negative electrode can 1. And, an aluminum plate 2b1 is placed on it, and thereon followed by an aluminum plate 2b1, and a lithium plate 2a2 in order, and a separator 5 is inserted on it from a minutely porous polypropylene film side, and electrolytic solution being injected, then to arrange a positive electrode 6. And, a positive electrode can 8 is fitted from above, and an opening edge of the positive electrode can 8 is fastened internally to have sealing by caulking a gasket 9 beforehand fitted to a folded part around the negative electrode can 1. The, lithium and aluminum, which are inserted into the negative electrode can 1, in plate-shaped states, are electrochemically alloyed in existence of electrolytic solution inside the cell, to become an alloy 2c of lithium-aluminum so that a negative electrode 2 is formed. |
