Iron flow batterty
AssigneeCase Western Reserve University
InventorsRobert F. Savinell, Jesse S. Wainright
Life of this patent
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Abstract
An iron based redox flow cell. The redox flow cell comprises a first half-cell comprising a first electrolyte providing a source of Fe2+ ions and an electrode disposed within the first half-cell; a second half-cell comprising a second electrolyte providing a source of Fe2+ and Fe3+ ions and an electrode disposed within the second half-cell; and a separator between the first and second half-cells, where (a) the second electrolyte comprises a Fe3+ stabilizing agent; (b) the first electrolyte comprises a hydrogen evolution suppressing agent; or (c) the first electrolyte comprises a hydrogen evolution suppressing agent, and the second electrolyte comprises a Fe3+ stabilizing agent.
Claims27
An iron flow redox cell comprising:
- a first half-cell comprising a first electrolyte providing a source of Fe2+ ions and an electrode disposed within the first half-cell;
- a second half-cell comprising a second electrolyte providing a source of Fe2+ and Fe3+ ions and an electrode disposed within the second half-cell;
- a separator between the first and second half-cells;
- a first storage tank external to the first half-cell for circulating the first electrolyte to and from the first half-cell;
- and
- a second storage tank external to the second half-cell for circulating the second electrolyte to and from the second half-cell, the half-cells conducting an oxidation reduction reaction to charge and discharge the battery, wherein (a) the second electrolyte comprises a Fe3+ stabilizing agent;
- (b) the first electrolyte comprises a hydrogen evolution suppressing agent;
- or (c) the first electrolyte comprises a hydrogen evolution suppressing agent, and the second electrolyte comprises a Fe3+ stabilizing agent.
Dependencies are inferred from the claim text.