| 摘要 |
PURPOSE:To markedly improve the heavy load electric discharge characteristic by constituting the positive electrode black mix from an applied layer made of manganese dioxide on the formed graphite which is formed on the surface of silver oxide in granular form. CONSTITUTION:The positive electrode black mix 1 is prepared by forming the silver oxide powder into granular form having a diameter of 100-300mu and mixing the formed graphite with the above silver oxide powder, and further mixing manganese dioxide having a diameter of 2-20mu and allowing the manganese dioxide, because of its hygroscopic property and water absorbing performance, to be adhered in laminated form onto the surface of the above silver oxide granules. The above compound is compression-shaped to a prescribed thickness by the normal ways. The adhered layer of consisting of formed graphite and manganese dioxide is retained as it even after shaping. 7-70 parts of Manganese dioxide are used for 100 parts of silver oxide by weight, and 0.2-1 part of the formed graphite is used for the total 100 parts of silver oxide and manganese dioxide. |
