US 12,283,731 B2
Cost-efficient high energy density redox flow battery
Yang Song, West Linn, OR (US)
Assigned to ESS TECH, INC., Wilsonville, OR (US)
Filed by ESS TECH, INC., Wilsonville, OR (US)
Filed on Sep. 26, 2022, as Appl. No. 17/935,370.
Application 17/935,370 is a continuation of application No. 16/536,213, filed on Aug. 8, 2019, granted, now 11,515,558.
Claims priority of provisional application 62/717,625, filed on Aug. 10, 2018.
Prior Publication US 2023/0014628 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 8/18 (2006.01); H01M 4/36 (2006.01); H01M 4/58 (2010.01); H01M 8/02 (2016.01); H01M 8/1018 (2016.01)
CPC H01M 8/188 (2013.01) [H01M 4/368 (2013.01); H01M 4/582 (2013.01); H01M 8/02 (2013.01); H01M 8/1018 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for a redox flow battery system, comprising:
responsive to operation of the redox flow battery system comprising a negative and positive electrolyte in a charging cycle at an ambient temperature,
plating metal monolayers on an electrode, the metal monolayers including metal cations bound by functional groups of additive molecules and with the metal monolayers separated by layers of the additive molecules, wherein the additive molecules are included in the negative electrolyte of the redox flow battery system in a millimolar concentration and increase a thickness of the plated metal monolayers compared to a thickness of metal plated at the electrode when the additive molecules are absent from the negative electrolyte, and wherein a plating rate of metal onto the electrode at the ambient temperature is greater than when the additive molecules are absent from the negative electrolyte, wherein the plating rate remains greater than when the additive molecules are absent even when a temperature of the redox flow battery system is below the ambient temperature; and
responsive to operation of the redox flow battery system in a discharging cycle, deplating the metal monolayers from the electrode.