Method and system for rebalancing electrolytes in a redox flow battery system
AssigneeEss Tech, Inc.
InventorsYang Song, Craig E. Evans
Life of this patent
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Abstract
A redox flow battery system is provided. The system includes a positive electrode in fluid communication with a positive electrolyte comprising a first metal ion and a negative electrode in fluid communication with a negative electrolyte comprising a second metal ion. An electrically insulating ion conducting surface is provided separating the positive electrode from the negative electrode. Further, the system includes a catalyst surface in fluid communication with the first metal ion, the second metal ion, or a combination thereof, and hydrogen gas, wherein the hydrogen gas and the first metal ion, the second metal ion, or a combination thereof are fluidly contacted at the catalyst surface.
Claims19
A redox flow battery system, comprising:
- a positive electrode in fluid communication with a positive electrolyte comprising a first metal ion;
- a negative electrode in fluid communication with a negative electrolyte comprising a second metal ion, wherein during charging of the redox flow battery system, the negative electrode comprises metal plated on to the negative electrode resulting from reduction of the second metal ion;
- an electrically insulating ion conducting surface separating the positive electrode from the negative electrode;
- and
- a catalyst surface in fluid communication with
- the first metal ion, the second metal ion, or a combination thereof, and
- hydrogen gas, wherein the hydrogen gas and the first metal ion, the second metal ion, or a combination thereof are fluidly contacted at the catalyst surface.
A redox flow battery system, comprising:
- a positive electrode in fluid communication with a positive electrolyte comprising a first metal ion;
- a negative electrode in fluid communication with a negative electrolyte comprising a second metal ion;
- an electrically insulating ion conducting surface separating the positive electrode from the negative electrode;
- and
- a catalyst surface in fluid communication with
- the first metal ion, the second metal ion, or a combination thereof, and hydrogen gas, wherein the hydrogen gas and the first metal ion, the second metal ion, or a combination thereof are fluidly contacted at the catalyst surface,
- wherein the redox flow battery system comprises an iron redox flow battery system, the negative electrode comprises an iron plating electrode, and the positive electrolyte and the negative electrolyte comprise ferric ion, ferrous ion, or a combination thereof.
Dependencies are inferred from the claim text.