Zinc halogen battery electrolyte composition with lead additive
AssigneeEnergy Development Associates, Inc.
InventorGary L. Henriksen
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Abstract
This disclosure relates to a zinc halogen battery electrolyte composition containing an additive providing improved zinc-on-zinc recyclability. The improved electrolyte composition involves the use of a lead additive to inhibit undesirable irregular plating and reduce nodular or dendritic growth on the electrode surface. The lead-containing electrolyte composition of the present invention appears to influence not only the morphology of the base plate zinc, but also the morphology of the zinc-on-zinc replate. In addition, such lead-containing electrolyte compositions appear to reduce hydrogen formation.
Claims4
An electrolyte composition for use in a zinc chlorine battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous zinc chloride solution and lead as an additive to said electrolyte in an amount between 10 and 25 parts per million which is effective to both reduce dendrite formation on said negative electrode during recharging after a partial discharge and provide an adherent zinc plate layer during said recharging.
Dependencies are inferred from the claim text.