Effect of bromine complexing agents on membrane performance in hydrogen bromine flow batteries

Yohanes Antonius Hugo, Natalia Mazur, Wiebrand Kout, Friso Sikkema, Zandrie Borneman, Kitty Nijmeijer (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

1 Citaat (Scopus)

Uittreksel

The addition of bromine complexing agent (BCA) to bromine electrolyte is an accepted method to reduce bromine vapor pressure making bromine-based flow batteries inherently safer. It is well-known that the amine functional group of the BCAs interact with Nafion membranes. The novelty of the current work is that it investigates how this interaction of BCA with the four different membrane chemistries impacts the membrane characteristics and performance of hydrogen bromine flow batteries (HBFBs). The impact of BCA 13 on the system performance is determined by the membrane chemistry. Exposure of Nafion membranes to BCA leads to 60% higher cell resistance, and 55% lower cell power density at 0.5 V at 50% state-of-charge (SOC). This decrease is caused by the strong interaction between the negatively charged sulfonic acid groups in the membrane and the positively charged BCA. Lower SOC, lower bromine concentration and a higher free BCA concentration is detrimental in the cell operation. The use of LC PFSA membranes in the presence of BCA ions should be avoided. while BCA in combination with grafted sulfonated polyvinylidene fluoride (SPVDF) or grafted sulfonated polyethylene (SPE) membranes promising HBFB results are obtained.

Originele taal-2Engels
Pagina's (van-tot)A3004-A3010
Aantal pagina's7
TijdschriftJournal of the Electrochemical Society
Volume166
Nummer van het tijdschrift13
DOI's
StatusGepubliceerd - 3 sep 2019

Vingerafdruk

Bromine
Hydrogen
Membranes
Flow batteries
Sulfonic Acids
Polyethylene
Vapor pressure
Functional groups
Electrolytes
Amines

Citeer dit

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abstract = "The addition of bromine complexing agent (BCA) to bromine electrolyte is an accepted method to reduce bromine vapor pressure making bromine-based flow batteries inherently safer. It is well-known that the amine functional group of the BCAs interact with Nafion membranes. The novelty of the current work is that it investigates how this interaction of BCA with the four different membrane chemistries impacts the membrane characteristics and performance of hydrogen bromine flow batteries (HBFBs). The impact of BCA 13 on the system performance is determined by the membrane chemistry. Exposure of Nafion membranes to BCA leads to 60{\%} higher cell resistance, and 55{\%} lower cell power density at 0.5 V at 50{\%} state-of-charge (SOC). This decrease is caused by the strong interaction between the negatively charged sulfonic acid groups in the membrane and the positively charged BCA. Lower SOC, lower bromine concentration and a higher free BCA concentration is detrimental in the cell operation. The use of LC PFSA membranes in the presence of BCA ions should be avoided. while BCA in combination with grafted sulfonated polyvinylidene fluoride (SPVDF) or grafted sulfonated polyethylene (SPE) membranes promising HBFB results are obtained.",
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Effect of bromine complexing agents on membrane performance in hydrogen bromine flow batteries. / Hugo, Yohanes Antonius; Mazur, Natalia; Kout, Wiebrand; Sikkema, Friso; Borneman, Zandrie; Nijmeijer, Kitty (Corresponding author).

In: Journal of the Electrochemical Society, Vol. 166, Nr. 13, 03.09.2019, blz. A3004-A3010.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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AU - Borneman, Zandrie

AU - Nijmeijer, Kitty

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