| 摘要 |
PURPOSE:To obtain a sealed alkaline manganese dioxide secondary battery in which pressure resistant performance and discharge performance are excellent and cost is economical by adding a specific amount of flake silver powder to manganese dioxide which is positive active material. CONSTITUTION:5-15 Pts.wt. flake silver powder is added to 100 Pts.wt. manganese dioxide. By adding the spacified amount of flake silver powder to manganese dioxide which is main active material, excellent charging performance, especially pressure resistant performance of silver controls a battery system, and the voltage of a battery is rapidly increased to a level specified in a pressure resistant test, and charging current is quickly decreased. As a result, since gas evolution is retarded, a sealed manganese secondary battery having excellent pressure resistant performance can be obtained. |
