| abstract |
A kind of active material for rechargeable zinc alkaline electrochemical cell negative pole is made up of the zinc metallic particles being coated with tin and/or lead.By adding plumbous and pink salt coating zinc particle to the slurry containing zinc particle, thickener and water.Then add rest zinc electrode component as zinc oxide (ZnO), bismuth oxide (Bi2O3), dispersant and binding agent are as Teflon.Slurry/the thickener obtained has stable viscosity, and in zinc electrode manufacture, be convenient to processing.In addition, when cobalt is present in electrolyte, zinc electrode not easily produces gas.The battery manufactured by electrode prepared in accordance with the present invention demonstrates significantly less hydrogen and separates out, more than conventional batteries minimizing 60-80%.Because zinc conducting base keeps complete and self discharge minimizing, therefore cycle life and storage life are also improved. |