Zinc-bromine battery

Details Zinc-bromine battery Zinc-bromine battery

1985-12-27

1987-06-30

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 15, 429 29, 429105, H01M 804

Patent

active

046770399

ABSTRACT:
A zinc-bromine battery is disclosed which includes anode and cathode reaction tanks separated from each other by a separator membrane for preventing self-discharge, and an electrolyte storage tank for storing an electrolyte with a bromine complexing agent added thereto. Catholyte and anolyte are circulated between the cathode reaction tank and the anode reaction tank, respectively, and the electrolyte storage tank. A perforated membrane which allows an electrolyte to permeate through it but which impedes the permeation of a bromine complex compound is provided within the electrolyte storage tank so as to separate the tank into an electrolyte mixing chamber into which both catholyte and anolyte flow and an electrolyte supply chamber which resupplies the mixed electrode as the catholyte and the anolyte. When the catholyte and anolyte are mixed with each other in the electrolyte storage tank, the zinc ion concentration is equalized as between the catholyte, so that the zinc ions contained in the electrolyte are effectively utilized during charge, thereby improving the charging capacity and efficiency.

REFERENCES:
patent: 4105829 (1978-08-01), Venero
patent: 4410606 (1983-10-01), Loutfy et al.
patent: 4469760 (1984-07-01), Giner et al.
patent: 4550065 (1985-10-01), Fujii et al.

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