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US 12,288,912 B2Granted
Redox flow battery with a balancing cell
AssigneeUop LLC
InventorsNatalie L. Nicholls, William T. Kender, Melissa L. Helm
Life of this patent
Estimating the term…
Abstract
A redox flow battery with an electrochemical balancing cell having first and second chambers. The first chamber includes a catalyst coated substrate and the second chamber includes an electrode. Each receives an electrolyte from the redox flow battery. There is a single interface between the two chambers. The balancing cell reverses parasitic reactions in the first chamber that occur in the redox flow battery. The products of the reversed reactions are carried away from the electrochemical balancing cell and back to the redox flow battery in the electrolyte that carried the reactant to the first chamber. Also, processes for reversing a parasitic reaction in a redox flow battery.
Claims12
A redox flow battery, comprising:
- a redox flow battery cell, and
- an electrochemical balancing cell comprising:
- a first chamber comprising an inlet for a first electrolyte, an outlet for the first electrolyte, and a catalyst coated substrate;
- a second chamber comprising an inlet for a second electrolyte, an outlet for the second electrolyte, and an electrode, and,
- a separator forming an interface between the first electrolyte in the first chamber and the second electrolyte in the second chamber, wherein the interface formed by the separator is the only interface between the first electrolyte and the second electrolyte in the electrochemical balancing cell,
- wherein the first chamber comprises an inlet configured to receive a stream of a gas from the redox flow battery cell, and
- wherein the first electrolyte includes a reaction product from an oxidation or reduction of the gas,
- wherein the first chamber comprises a T-shape, with a lower portion and an upper portion that is wider than the lower portion.
5 more elements
A redox flow battery comprising:
- an anode half-cell comprising an anode and an anolyte flowing through an anode chamber;
- a cathode half-cell comprising a cathode and a catholyte flowing through a cathode chamber, the cathode in electrical communication with the anode;
- and,
- an electrochemical balancing cell comprising:
- a first chamber comprising an inlet for the anolyte, an outlet for the anolyte, and a catalyst coated substrate;
- a second chamber comprising an inlet for the catholyte, an outlet for the catholyte, and an electrode;
- and,
- a separator forming an interface between the anolyte in the first chamber and the catholyte in the second chamber, wherein the interface formed by the separator is the only interface between the first electrolyte and the second electrolyte in the electrochemical balancing cell,
- wherein the first chamber comprises an inlet configured to receive a gaseous reaction product produced at the anode and an outlet for a gaseous effluent, and
- wherein the anolyte includes a reaction product from an oxidation reaction, at the catalyst coated substrate, of the gaseous reaction product,
- wherein the first chamber comprises a T-shape, with a lower portion and an upper portion that is wider than the lower portion.
8 more elements
A redox flow battery comprising:
- an anode half-cell comprising an anode and an anolyte flowing through an anode chamber;
- a cathode half-cell comprising a cathode and a catholyte flowing through a cathode chamber, the cathode in electrical communication with the anode;
- and,
- an electrochemical balancing cell comprising:
- a first chamber comprising an inlet for the anolyte, an outlet for the anolyte, and a catalyst coated substrate;
- a second chamber comprising an inlet for the catholyte, an outlet for the catholyte, and an electrode;
- and,
- a separator forming an interface between the anolyte in the first chamber and the catholyte in the second chamber, wherein the interface formed by the separator is the only interface between the first electrolyte and the second electrolyte in the electrochemical balancing cell,
- wherein the first chamber is configured to receive a gaseous reaction product produced at the anode,
- wherein the anolyte includes a reaction product from an oxidation reaction, at the catalyst coated substrate, of the gaseous reaction product,
- wherein a stream of the gaseous reaction product is introduced to the first chamber with the anolyte via the inlet for the anolyte, and
- wherein the inlet for the anolyte is located at a height in the first chamber that is lower than a height of the outlet for the anolyte,
- wherein the first chamber comprises a T-shape, with a lower portion and an upper portion that is wider than the lower portion.
10 more elements
Dependencies are inferred from the claim text.