US 11,942,669 B2
Electrochemical-based purification of electrolyte solutions, and related systems and methods
Joseph T. Sullivan, Hanover, NH (US)
Assigned to Largo Clean Energy Corp., Wilmington, MA (US)
Filed by Largo Clean Energy Corp., Andover, MA (US)
Filed on Jan. 24, 2022, as Appl. No. 17/582,210.
Application 17/582,210 is a division of application No. 16/449,667, filed on Jun. 24, 2019, granted, now 11,233,260.
Application 16/449,667 is a continuation of application No. 15/726,858, filed on Oct. 6, 2017, granted, now 10,333,164, issued on Jun. 25, 2019.
Claims priority of provisional application 62/405,576, filed on Oct. 7, 2016.
Prior Publication US 2022/0149405 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 8/06 (2016.01); C01G 31/00 (2006.01); C01G 31/02 (2006.01); H01M 8/18 (2006.01); C01B 3/00 (2006.01)
CPC H01M 8/0693 (2013.01) [C01G 31/00 (2013.01); C01G 31/02 (2013.01); H01M 8/188 (2013.01); C01B 3/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of commissioning a redox flow battery having a positive side and a negative side, the method comprising:
providing an electrolyte solution having an initial valence and at least four available oxidation states comprising a set of higher oxidation states and a set of lower oxidation states;
reducing the electrolyte solution to a valence below the initial valence to make a reduced electrolyte solution having a valence within the set of lower oxidation states;
oxidizing a first portion of the reduced electrolyte solution to make a positive-side electrolyte solution having a valence within the set of higher oxidation states;
providing, for the commissioning, the positive-side electrolyte solution for the positive side of the redox flow battery; and
providing, for the negative side of the redox flow battery for the commissioning, a second portion of the reduced electrolyte solution as a negative-side electrolyte solution having a valence within the set of lower oxidation states.