Patent ID: 9640826
Date: 2017-05-02
CPC Classifications: H01M,Y02E,Y10T

Claim:
1. A redox flow battery comprising: a first membrane; a second membrane; a first electrolyte disposed between the first membrane and the second membrane; a second electrolyte disposed between the first membrane and a first electrode; a third electrolyte disposed between the second membrane and a second electrode; a third membrane disposed between the first membrane and the second membrane; and a fourth electrolyte disposed between the first membrane and the second membrane; wherein the third membrane separates the fourth electrolyte from the first electrolyte, and either: (i) the first electrolyte and the fourth electrolyte is not in contact with any electrode: or (ii) the second electrolyte is more basic than the first electrolyte or the fourth electrolyte, and the first electrolyte or the fourth electrolyte is more basic than the third electrolyte.