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Asymmetric cycling of vanadium redox flow batteries with a poly(arylene piperidinium)-based anion exchange membrane
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.ORCID iD: 0000-0002-6282-9004
Lund University.
Lund University.
Lund University.
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2021 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 483, article id 229202Article in journal (Refereed) Published
Abstract [en]

The potential application of a 50 μm thick anion exchange membrane prepared based on poly(terphenyl piperidinium-co-trifluoroacetophenone) (PTPT) is investigated for vanadium redox flow batteries (VRFBs). The PTPT exhibits a considerably lower vanadium permeation than Nafion 212. Therefore, the self-discharge duration of the VRFB based on PTPT is much longer than the VRFB based on Nafion 212. Besides, PTPT shows oxidative stability almost as good as Nafion 212 during immersion in an ex-situ immersion test for more than 400 h. Comparing the VRFB performance when symmetric and asymmetric electrolyte volumes are used yields interesting results. The results show that asymmetric cycling is more effective and efficient for the VRFB assembled with PTPT than Nafion 212 as the capacity fade of 0.03% cycle−1, and the highest coulombic efficiency of 98.8% is attained. Furthermore, the color change of the membrane during cycling can be reversed using a straightforward post-treatment method.

Place, publisher, year, edition, pages
Elsevier BV , 2021. Vol. 483, article id 229202
Keywords [en]
Vanadium redox flow battery, Anion exchange membrane, Asymmetric cycling, Nafion, Poly (arylene piperidinium), Piperidinium cations
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-286694DOI: 10.1016/j.jpowsour.2020.229202ISI: 000620252400005Scopus ID: 2-s2.0-85096194794OAI: oai:DiVA.org:kth-286694DiVA, id: diva2:1504411
Note

QC 20210326

Available from: 2020-11-27 Created: 2020-11-27 Last updated: 2022-06-25Bibliographically approved

Open Access in DiVA

VRFB(3889 kB)326 downloads
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File name FULLTEXT01.pdfFile size 3889 kBChecksum SHA-512
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Type fulltextMimetype application/pdf

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Publisher's full textScopushttps://www.sciencedirect.com/science/article/pii/S0378775320314920

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Khataee, AmirrezaLindström, Rakel

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Applied Electrochemistry
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