Electrode for a zinc-chloride battery and batteries containing the same
AssigneeEnergy Development Associates, Inc.
InventorThomas G. Hart
Life of this patent
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Abstract
Hollow rod-shaped porous zinc electrodes are employed in a rechargeable zinc-chloride battery to decrease the possibility of shorting within the battery, to decrease hydrogen evolution and to increase the efficiency of the battery. Dechlorinated electrolyte is flowed through the Zn electrode and Zn deposit thereon so as to avoid black zinc at low current density and increase the efficiency of the battery.
Claims7
A zinc-chlorine high energy density battery comprising a chamber, means to withdraw gas from the chamber, at least one chlorine electrode within the chamber, at least one aqueous zinc chloride electrolyte porous zinc electrode within the chamber, means to introduce substantially dechlorinated electrolyte into the interior of the zinc electrode, and means to withdraw the electrolyte from the chamber.
A method of avoiding the formation of dendrites and black zinc on the zinc electrode of a zinc-chlorine high energy density battery which comprises constructing the zinc electrode from a material which is porous to aqueous zinc chloride electrolyte, flowing said electrolyte which has been substantially dechlorinated through said zinc electrode and employing a current density at which the formation of dendrites and black zinc is avoided.
Dependencies are inferred from the claim text.