| 摘要 |
PURPOSE:To reduce the unevenness of close circuit voltage and fully ensure discharge capacity by setting the entire surface area ratio of silver suboxide as the anode active material to lead dioxide as the conductive assistant to a specific range when silver suboxide as the anode active material is granulated and molded. CONSTITUTION:An anode black mix 1 in which a specified amount of lead dioxide fine powder of 10mum or less in particle diameter is mixed in silver suboxide powder granulated in 50 to 500mum, pressuirzed, and molded is inserted in an anode can 2 into which a part of an alkaline electroly the is injected and a separator 3 and an electrolytic absorption body 4 are subsequently loaded. Then, an annular gasket 7 is fit in a peripheral section and is engaged with a cathode terminal block 5 that internally filled with which uses amalgamated zinc as the active material and the alkaline electrolyte for the remainder of most part. The opening of the anode can 2 is tightened inward and the inner surface is press-contacted with the annular gasket 7 is sealed. In this case, the entire surface area ratio of silver suboxide powder to lead dioxide fine powder is set to 1 to 0.8 through 1 to 2.5 |
