| 摘要 |
A zinc-bromine battery includes cathode and anode reaction tanks separated from each other by a separator membrane for preventing self-discharge, and an elctrolyte 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 elctrolyte 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 and anolyte, so that the zinc ions contained in the electrolyte are effectively utilized during charge, thereby improving the charging capacity and efficiency. |
