| 摘要 |
PURPOSE:To upgrade electrolytic solution retentiveness of a positive electrode and to increase an actual reaction area of the positive electrode and to improve conductivity in the positive electrode by mixing carbon black, which consists of activated charcoal and hollow shell-shaped particles, in the positive electrode whose active material is carbon fluoride. CONSTITUTION:An inner bottom part of a positive electrode case 1 is coated with a conductive carbon film 2. A positive electrode 3 is mounted on this conductive carbon film 2. This positive electrode 3 is formed by mixing 90 wt.% of carbon fluoride, 5 wt.% of carbon black which consists of hollow shell shaped particles and is 900 m<2>/g in its specific surface area, 1 wt.% of active charcoal powder which is 2000 m<2>/g in its specific surface area, and 4 wt.% of a bonding agent such as fluorine resin. A separator 4 made of polypropylene nonwoven fabric is mounted on the positive electrode plate 3, and a negative electrode 5 made of metallic lithium is mounted on the separator 4. Hence, organic electrolytic solution retentiveness of the positive electrode 3 can be upgraded, and an actual reaction area of the positive electrode 3 to the organic electrolytic solution can be increased, and besides conductivity in the positive electrode can be improved. |
