| 摘要 |
1515721 Forming electrodes for alkaline cells WESTERN ELECTRIC CO Inc 12 June 1975 [12 June 1974] 25181/75 Heading H1B In a method of forming an electrode for an alkaline cell by cycling electrolytically an impregnated plaque at least once through a charge/discharge cycle, the forming is carried out in an aqueous electrolyte containing a base having a basicity constant greater than 0À1 with a concentration between 4 molar and the saturation concentration of the electrolyte, the forming temperature being between 40‹ C. and the boiling temperature of the electrolyte and with a charge/discharge rate in amps of 4-10 times the amp-hour capacity of the electrode. The plaque may be nickel impregnated with a suitable metallic salt to form Ni Cd, Zn, Ag or Hg electrodes. The base may be NaOH or KOH; preferred concentrations are 4À5-5À5 and 7-8 molar respectively. The preferred temperature range is 50-60‹ C. The method lends itself to a continuous forming process (Fig. 2, not shown). Examples of Ni-Cd batteries with microporous polymeric (e.g. polypropylene) separators are briefly described (Figs. 3 and 4, not shown). |
