| 摘要 |
PURPOSE:To suppress an increase of the inner resistance at the later period of discharging and improve the discharge characteristic by adding titanium sulfide to a positive electrode using iron disulfide as the active material. CONSTITUTION:A pellet molded by pressure with the positive electrode black mix made by adding acetylene black and graphite as conductive agent and fluororesin powder as binding agent to a mixture of iron disulfide and titanium sulfide than thoroughly mixing them is burnt at a temperature of 200-300 deg.C to form a positive electrode 1. A punched lithium rolled plate is used for a negative electrode 4. In addition, a mixed solvent of propylene carbonate and 1,2-dimethoxyethane solved with lithium borofluoride, for example, is used as the electrolyte. Accordingly, an increase of rhe inner resistance at the later period of discharging is suppressed, and the discharge characteristic is improved. |
