US 12,087,981 B2
Electrolyte health management for redox flow battery
Yang Song, West Linn, OR (US); Timothy J. McDonald, Portland, OR (US); and Alexandria Behr, Portland, OR (US)
Assigned to ESS TECH, INC., Wilsonville, OR (US)
Filed by ESS TECH, INC., Wilsonville, OR (US)
Filed on Jul. 28, 2023, as Appl. No. 18/361,626.
Application 18/361,626 is a division of application No. 17/453,993, filed on Nov. 8, 2021, granted, now 11,764,380.
Application 17/453,993 is a continuation of application No. 16/684,429, filed on Nov. 14, 2019, granted, now 11,201,343, issued on Dec. 14, 2021.
Claims priority of provisional application 62/770,027, filed on Nov. 20, 2018.
Prior Publication US 2023/0378505 A1, Nov. 23, 2023
Int. Cl. H01M 8/06 (2016.01); H01M 8/04186 (2016.01); H01M 8/0444 (2016.01); H01M 8/04746 (2016.01); H01M 8/18 (2006.01)
CPC H01M 8/0693 (2013.01) [H01M 8/04186 (2013.01); H01M 8/0444 (2013.01); H01M 8/04753 (2013.01); H01M 8/188 (2013.01)] 15 Claims
OG exemplary drawing
 
1. 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.