| 摘要 |
PURPOSE:To increase the conductivity between a positive-electrode can and the positive-electrode black mix, decrease the carbon content of the positive-electrode black mix in response to that, increase the discharge capacity, reduce the internal resistance, and increase the short-circuit current by forming a conductive film on the inner surface by forming a conductive film on the inner surface of the positive-electrode can. CONSTITUTION:A conductive film 2 is formed on the inner surface of a positive- electrode can 1, and the positive-electrode black mix 3 is in contact with this conductive film 2. This conductive film 2 improves the electrical contact between the positive-electrode black mix 3 and the positive-electrode can 1 and keeps the conductivity between them high. For the conductive film 2, a film dispersed with a carbon series as a conductive component in vinyl acetate resin as a binder, for example, is used. For the positive-electrode black mix 3, manganese dioxide as an active material and carbon as a conductive agent are mixed in a wt% range of 9/1-32/1. |
