| 摘要 |
PURPOSE:To realize an excellent high temperature preservation property of a cell, by applying a porous thin plate of the ferrite family including a specific ratio of Cr and Al as a collector of a sheet form thin positive electrode plate. CONSTITUTION:An electroconductive agent and a binder are added to MnO2 powder and kneaded. After the resultant composite is made into a sheet, it is pressed into a collector of lath processed ferrite family stainless steel with 0.1mm thickness including 18wt% of Cr and 3-5wt% of Al. The so-composed sheet form positive electrode plate 3 and a Li negative electrode plate 2 are opposed through a separator 6 to form a herical electrode plate group. By forming the electrode plate group in such a way, and by applying an electrolyte- proof material for the collector, a cell of an excellent stability in a high temperature preservation condition can be obtained. |
