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Article

Study of Anion Exchange Membrane Properties Incorporating N-spirocyclic Quaternary Ammonium Cations and Aqueous Organic Redox Flow Battery Performance

1
Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38 000 Grenoble, France
2
Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany
3
Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany
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JenaBatteries GmbH, Otto-Schott-Strasse 15, 07745 Jena, Germany
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Réseau sur le Stockage Electrochimique de l’Energie (RS2E), CNRS, FR3459, CEDEX, 80 039 Amiens, France
*
Authors to whom correspondence should be addressed.
Authors contributed equally.
Academic Editor: Patric Jannasch
Membranes 2021, 11(5), 367; https://doi.org/10.3390/membranes11050367
Received: 5 May 2021 / Revised: 13 May 2021 / Accepted: 14 May 2021 / Published: 18 May 2021
(This article belongs to the Section Membrane Analysis and Characterization)
Flexible cross-linked anion exchange membranes (AEMs) based on poly (p-phenylene oxide) grafted with N-spirocyclic quaternary ammonium cations were synthesized via UV-induced free-radical polymerization by using diallylpiperidinium chloride as an ionic monomer. Five membranes with ion exchange capacity (IEC) varying between 1.5 to 2.8 mmol Cl·g−1 polymer were obtained and the correlation between IEC, water uptake, state of water in the membrane and ionic conductivity was studied. In the second part of this study, the influence of properties of four of these membranes on cell cycling stability and performance was investigated in an aqueous organic redox flow battery (AORFB) employing dimethyl viologen (MV) and N,N,N-2,2,6,6-heptamethylpiperidinyl oxy-4-ammonium chloride (TMA-TEMPO). The influence of membrane properties on cell cycling stability and performance was studied. At low-current density (20 mA·cm−2), the best capacity retention was obtained with lower IEC membranes for which the water uptake, freezable water and TMA-TEMPO and MV crossover are low. However, at a high current density (80 mA·cm−2), membrane resistance plays an important role and a membrane with moderate IEC, more precisely, moderate ion conductivity and water uptake was found to maintain the best overall cell performance. The results in this work contribute to the basic understanding of the relationship between membrane properties and cell performance, providing insights guiding the development of advanced membranes to improve the efficiency and power capability for AORFB systems. View Full-Text
Keywords: anion exchange membrane; poly (diallylpiperidinium chloride); TMA-TEMPO/MV; aqueous organic redox flow battery; cyclability anion exchange membrane; poly (diallylpiperidinium chloride); TMA-TEMPO/MV; aqueous organic redox flow battery; cyclability
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MDPI and ACS Style

Tsehaye, M.T.; Yang, X.; Janoschka, T.; Hager, M.D.; Schubert, U.S.; Alloin, F.; Iojoiu, C. Study of Anion Exchange Membrane Properties Incorporating N-spirocyclic Quaternary Ammonium Cations and Aqueous Organic Redox Flow Battery Performance. Membranes 2021, 11, 367. https://doi.org/10.3390/membranes11050367

AMA Style

Tsehaye MT, Yang X, Janoschka T, Hager MD, Schubert US, Alloin F, Iojoiu C. Study of Anion Exchange Membrane Properties Incorporating N-spirocyclic Quaternary Ammonium Cations and Aqueous Organic Redox Flow Battery Performance. Membranes. 2021; 11(5):367. https://doi.org/10.3390/membranes11050367

Chicago/Turabian Style

Tsehaye, Misgina T., Xian Yang, Tobias Janoschka, Martin D. Hager, Ulrich S. Schubert, Fannie Alloin, and Cristina Iojoiu. 2021. "Study of Anion Exchange Membrane Properties Incorporating N-spirocyclic Quaternary Ammonium Cations and Aqueous Organic Redox Flow Battery Performance" Membranes 11, no. 5: 367. https://doi.org/10.3390/membranes11050367

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