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Vanadium Redox Flow Battery Using Aemion((TM)) Anion Exchange Membranes
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.ORCID-id: 0000-0003-2240-6266
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.ORCID-id: 0000-0002-6282-9004
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.ORCID-id: 0000-0002-0452-0703
2022 (engelsk)Inngår i: Processes, ISSN 2227-9717, Vol. 10, nr 2, artikkel-id 270Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The vanadium redox flow battery (VRFB) is a promising and commercially available technology that poses advantageous features for stationary energy storage. A key component of the VRFB in terms of cost and system efficiency is the membrane. In recent years, anion exchange membranes (AEMs) have gained interest in VRFB research as they in general exhibit lower vanadium crossover due to a more substantial Donnan exclusion effect. In this study, a low-resistance flow cell was developed and the electrochemical performance of Aemion (TM) anion exchange membranes AF1-HNN5-50-X, AF1-HNN8-50-X and AF1-ENN8-50-X were compared against commonly used cation exchange membranes, Nafion(R) 211 and 212. The VRFB using AF1-ENN8-50-X exhibited superior performance versus Nafion(R) 212 regarding cycling efficiency and rate performance. However, relatively high and comparable capacity losses were observed using both membranes. NMR analysis showed no sign of chemical degradation for AF1-ENN8-50-X by immersion in VO2+ solution for 800 h. Although Aemion (TM) AEMs showed good chemical and electrochemical performance, considerable electrolyte crossover was observed due to high water uptake.

sted, utgiver, år, opplag, sider
MDPI AG , 2022. Vol. 10, nr 2, artikkel-id 270
Emneord [en]
vanadium redox flow battery, anion exchange membrane, Aemion (TM), Nafion, vanadium crossover, water uptake, coulombic efficiency
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Identifikatorer
URN: urn:nbn:se:kth:diva-310034DOI: 10.3390/pr10020270ISI: 000763167200001Scopus ID: 2-s2.0-85123696302OAI: oai:DiVA.org:kth-310034DiVA, id: diva2:1646178
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QC 20220321

Tilgjengelig fra: 2022-03-21 Laget: 2022-03-21 Sist oppdatert: 2024-03-18bibliografisk kontrollert

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Lallo, Eliaskhataee, AmirrezaWreland Lindström, Rakel

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