| 摘要 |
PURPOSE:To raise resistance to the leakage of liquid by forming an electrolyte leakage-preventing film composed mainly of a carboxylic acid or its salt on the surface of a cathode current collector in contact with gasket. CONSTITUTION:To form a cell, the anode mixture 1 composed mainly of argentous oxide, etc., and the separator 2 are filled in the anode can 8, the cathode terminal plate 9 as a cathode current collector filled with the catholyte 7 composed mainly of amalgamated zinc is porvided on the can 8, and then the annular gasket 10 of polyethylene, etc., is provided for enclosure. The cathode current collector 9 has the nickel layer 12 on the outside of the steel plate 11, the copper layer 13 on the inside of the plate 11, and the bent portion 14 on the circumference of the plate 11. And, at the point 15 in contact with the gasket 10 of the copper layer 13 at the bet portion 14, the film 16 composed mainly of a carboxylic acid or its salt, e.g., a 10-30 carbon saturated or unsaturated higher fatty acid or its Na, Ca, Ba, or Mg salt, is formed. On the film 16, the liquid packing 17 of asphalt pitch, etc., is preferably provided. |
