Multiple-membrane multiple-electrolyte redox flow battery design

摘要

A redox flow battery is provided. The redox flow battery involves multiple-membrane (at least one cation exchange membrane and at least one anion exchange membrane), multiple-electrolyte (one electrolyte in contact with the negative electrode, one electrolyte in contact with the positive electrode, and at least one electrolyte disposed between the two membranes) as the basic characteristic, such as a double-membrane, triple electrolyte (DMTE) configuration or a triple-membrane, quadruple electrolyte (TMQE) configuration. The cation exchange membrane is used to separate the negative or positive electrolyte and the middle electrolyte, and the anion exchange membrane is used to separate the middle electrolyte and the positive or negative electrolyte.

主权项

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.