| 摘要 |
PURPOSE:To provide excellent gas absorbing characteristic and prolong the lifetime even in high temp. range by using a current collecting roller, and accomplishing a film layer of uniform metal nickel. CONSTITUTION:Active substance powder is turned into paste or sheet and coated on both sides of a conductive support followed by drying, and the resultant is immersed in aqueous solution containing at least one of sulfuric acid and hydrochloric acid, put in contact with a current collecting roller in this aqueous solution, immesed in an aqueous solution containing nickel sulfate, nickel chloride, and boric acid, followed by current supply to the current collecting roller, and thereby the product is negative electrolyzed to form a film layer of metal nickel continuously on the surface of cadmium active substance. Thus a film layer of uniform metal nickel is obtained excellent in gas absorbing characteristic and with long life even in high temp. range. |
