| 摘要 |
1,018,635. Batteries. GOULD-NATIONAL BATTERIES Inc. Aug. 21, 1964 [Oct. 2, 1963], No. 34319/64. Heading H1B. The chemical formation of a porous nickel electrode, the electrode pores initially containing Ni(OH) 2 and impurities such as nitrates, comprise the steps of soaking the electrode in an aqueous oxidizing solution of NaOC1 or KOC1 and then soaking the oxidized electrode in a reducing alkaline-alcohol solution, finally washing and drying the electrode so formed. The hypochlorite solution has a. concentration equivalent to 98 to 110 grams per litre of available chlorine and an alkalinity of 4% to 7% NaOH, or equivalent KOH, by weight at an initial solution temperature of 20-35‹ C. The soak time is 30 minutes and an effective volume of solution is 4À6 c.c per square inch of plate 0À025 inch thick. The concentration of the alkaline alcohol solution is equivalent to 1 part of methanol to 13 parts of 1% NaOH at an initial temperature of 20‹ to 35‹ C. The soak time is 10 minutes and the volume of the solution is 4À6 c.c. per square inch of plate 0À025 inch thick. Initial electrode preparation comprises porous sintered nickel plaques impregnated with active material in a conventional manner including an undesirable amount of nitrates as impurities. An antipolar mass of cadmium may be added as in Specification 784,851. |
