US 11,967,747 B2
Redox flow battery electrolytes with 2,5-dimercapto-1,3,4-thiadiazole (DMTD) and its derivatives
Shiyu Zhang, Columbus, OH (US); Paul E. Adams, Willoughby, OH (US); Shelby Davis, Columbus, OH (US); Christopher Michael Rasik, Cleveland, OH (US); and Madison Tuttle, Columbus, OH (US)
Assigned to The Lubrizol Corporation, Wickliffe, OH (US); and Ohio State Innovation Foundation, Columbus, OH (US)
Appl. No. 17/642,975
Filed by The Lubrizol Corporation, Wickliffe, OH (US); and The Ohio State Innovation Foundation, Columbus, OH (US)
PCT Filed Sep. 14, 2020, PCT No. PCT/US2020/050686
§ 371(c)(1), (2) Date Mar. 15, 2022,
PCT Pub. No. WO2021/055275, PCT Pub. Date Mar. 25, 2021.
Claims priority of provisional application 62/901,307, filed on Sep. 17, 2019.
Prior Publication US 2022/0320561 A1, Oct. 6, 2022
Int. Cl. H01M 8/18 (2006.01); H01M 8/02 (2016.01); H01M 8/0239 (2016.01); H01M 8/08 (2016.01)
CPC H01M 8/188 (2013.01) [H01M 8/02 (2013.01); H01M 8/0239 (2013.01); H01M 8/08 (2013.01); H01M 2300/0002 (2013.01); H01M 2300/0028 (2013.01)] 14 Claims
 
1. A redox flow battery electrolyte comprising A) a polar solvent, and B) from about 1 to about 50 wt.% 2,5-dimercapto-1,3,4-thiadiazole derivatives represented by formula I:

OG Complex Work Unit Chemistry
where
each “X,” individually, is an alkali or alkaline earth metal, a trialkyl amine, or a quaternary amine, or H;
“m” is 1, 2 or 3, and
“n” is 1 or 2; and
where “Y” is:
“R,” a linear, branched, saturated or unsaturated, or cyclic C1 to C12 alkyl or aryl group;
“[RO]oR,” where “o” is an integer from 1 to 100;
“R[OH]pA,” where “p” is an integer from 1 to 6 and “A” is H or an amine;
or
a carboxylate or carboxamide group,
wherein, when n is 2, X is absent.