US 11,901,598 B2
Increasing reactant utilization in Fe/V flow batteries
Ahmad D. Hammad, Dhahran (SA); Issam T. Amr, Al Khobar (SA); Zhenguo Yang, Bellevue, WA (US); and Yueqi Liu, Mukilteo, WA (US)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Feb. 15, 2022, as Appl. No. 17/651,116.
Prior Publication US 2023/0261233 A1, Aug. 17, 2023
Int. Cl. H01M 8/18 (2006.01); H01M 4/96 (2006.01); H01M 8/0258 (2016.01); H01M 8/04186 (2016.01); H01M 8/04082 (2016.01)
CPC H01M 8/188 (2013.01) [H01M 4/96 (2013.01); H01M 8/0258 (2013.01); H01M 8/04186 (2013.01); H01M 8/04216 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A flow cell battery, comprising:
an electrochemical cell, wherein the electrochemical cell comprises:
an ion exchange membrane;
an anode current collector;
a cathode current collector, wherein a space between the ion exchange membrane and the anode current collector forms a first channel, a space between the ion exchange membrane and the cathode current collector forms a second channel, and wherein the ion exchange membrane is configured to allow ions to pass between the first channel and the second channel;
a first tank configured to flow an anolyte through the first channel at a first rate; and
a second tank configured to flow a catholyte through the second channel at a second rate, wherein the catholyte comprises 1.25 molar (M) V, 1.25 M Fe, 6.6 M Cl−, and 0.8 M SO42−.