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US 12,087,981 B2Granted
Electrolyte health management for redox flow battery
AssigneeEss Tech, Inc.
InventorsYang Song, Timothy J. McDonald, Alexandria Behr
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a rebalancing reactor of a flow battery system. In one example, a pH of a battery electrolyte may be maintained by the rebalancing reactor by applying a negative potential to a catalyst bed of the rebalancing reactor. A performance of the rebalancing reactor may further be maintained by treating the catalyst bed with deionized water.
Claims15
A redox flow battery system, comprising:
- a cell receiving electrolyte and hydrogen gas;
- a rebalancing reactor fluidly coupled to the cell and configured to also receive the electrolyte and the hydrogen gas;
- and
- a conductive wire embedded in a catalyst bed of the rebalancing reactor, the conductive wire configured to apply a negative potential to the catalyst bed to impede formation of a double diffusion layer and increase a ferrous iron reduction rate at the catalyst bed.
1 more element
A system for a redox flow battery, comprising:
- a rebalancing cell configured to receive electrolyte and hydrogen;
- a catalyst bed arranged in the rebalancing cell;
- a conductive wire coupled to the catalyst bed and to a battery external to the rebalancing cell;
- and
- a controller with computer-readable instructions stored on non-transitory that when executed enable the controller to supply a voltage to the conductive wire in response to a ferric iron reduction rate decreasing below a threshold rate.
2 more elements
Dependencies are inferred from the claim text.