| 摘要 |
PURPOSE:To obtain sure contact by using specific conductive films as current collectors of both electrodes. CONSTITUTION:An insulating gasket 2 is put in the inner circumference of a stainless steel positive case 1. A conductive film 3 is placed as a positive current collector on the bottom of the positive case 1. A positive mix 4 molded in a disk having a diameter of 15mm is placed on the film 3, and a separator 6 is arranged between a negative active material 5 and the positive mix 4. A conductive film 7 is placed as a negative current collector between the active material 5 and a negative can 8 which also serves as a negative terminal. The upper end 1a of the case 1 is bent inward to fix the gasket 2. The film 7 is formed by mixing 70-90 wt.%, preferably 75-85 wt.%, ethylene base resin having a density of 0.945 g/cm<3> or more with 30-10 wt.%, preferably 25-15 wt.%, conductive carbon black powder. The contact of the positive mix 4 with the positive case 1, and that of the negative active material 5 with the negative can 8 can be made sure. |
