| 摘要 |
PURPOSE:To retard shape change of zinc electrode or dendritic growth of zinc, and also to retard hardening of zinc active material paste during manufacture by coating an electrode core with zinc active material paste added with calcium gluconate. CONSTITUTION:Zinc active material paste to which calcium gluconate is added is applied to an electrode core, and dried. The adding amount of calcium gluconate is 10-20 wt% based on the zinc active material. Since calcium hydroxide produced by reaction with alkaline electrolyte fixes zincate ion as calcium zincate, the shape change of a zinc electrode 2 or the dendritic growth of zinc attendant upon the progress of charge-discharge cycles is retarded. Since formation of calcium zincate is prevented during manufacture of zinc electrode, hardening of zinc active material paste can be retarded. |
