Method and system for rebalancing electrolytes in a redox flow battery system

Song, Yang; Evans, Craig E.

Title: Method and system for rebalancing electrolytes in a redox flow battery system

Patent · Tue Dec 13 00:00:00 EST 2022

OSTI ID:1986930

Song, Yang; Evans, Craig E.

A method of rebalancing electrolytes in a redox flow battery system comprises directing hydrogen gas generated on the negative side of the redox flow battery system to a catalyst surface, and fluidly contacting the hydrogen gas with an electrolyte comprising a metal ion at the catalyst surface, wherein the metal ion is chemically reduced by the hydrogen gas at the catalyst surface, and a state of charge of the electrolyte and pH of the electrolyte remain substantially balanced.

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Research Organization:: ESS Technology, Inc., Wilsonville, OR (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AR0000261

Assignee:: ESS Technology, Inc. (Wilsonville, OR)

Patent Number(s):: 11,527,771

Application Number:: 17/151,611

OSTI ID:: 1986930

Resource Relation:: Patent File Date: 01/18/2021

Country of Publication:: United States

Language:: English

References (15)

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Effects of Hydroxycarboxylic Acids on the Electrodeposition of Fe-C Alloys Fujiwara, Yutaka; Izaki, Masanobu; Enomoto, Hidehiko Denki Kagaku oyobi Kogyo Butsuri Kagaku, Vol. 61, Issue 7 https://doi.org/10.5796/electrochemistry.61.840	journal	January 1993
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Redox Flow Cell Rebalancing Keshavarz, Majid; Karuppaiah, Chockkalingam; Zu, Ge https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110086247 US Patent Document 12/790573; 20110086247	patent-application	April 2011
Electrochemical cell for rebalancing redox flow system Thaller, Lawrence H. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4159366 US Patent Document 4,159,366	patent	June 1979
Hardness and carbon content of Fe electroplate from sulfate bath containing l-ascorbic acid and citric acid. [ｌ‐アスコルビン酸とクエン酸を含む硫酸浴からのＦｅめっきの硬度と炭素含有率] Izaki, Masanobu; Enomoto, Hidehiko; Omi, Takashi Journal of the Surface Finishing Society of Japan, Vol. 40, Issue 11 https://doi.org/10.4139/sfj.40.1304	journal	January 1989
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Electrochemical energy storage and/or power delivery cell with pH control Zito, Ralph https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5439757 US Patent Document 5,439,757	patent	August 1995
Rebalancing Electrolytes In Redox Flow Battery Systems Chang, On Kok; Pham, Ai Quoc https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20130084482 US Patent Application 13/433189; 20130084482	patent-application	April 2013
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