Ashlawn Energy

A vanadium redox flow battery (VRFB) is a unique rechargeable battery with electrochemical energy in two redox couples contained in external electrolyte tanks. One electrolyte tank carries a positive potential; the other electrolyte tank carries a negative potential. During operations electrolytes are pumped from tanks and directed into battery stack(s) consisting of several battery cells. Each cell contains electrodes, i.e., bipolar graphite plates, which form two opposite walls of a battery cell while the two electrolytes flow between them separated by a thin polymer exchange membrane that allows cross-transport of a charge-carrying species to maintain electrical neutrality and electrolyte balance.