Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151155
Title: Equilibrium and dynamic absorption of electrolyte species in cation/anion exchange membranes of vanadium redox flow batteries
Authors: Nguyen, Tam Duy
Whitehead, Adam
Wai, Nyunt
Ong, Samuel Jun Hoong
Scherer, Günther G.
Xu, Jason Zhichuan
Keywords: Engineering::Materials
Issue Date: 2019
Source: Nguyen, T. D., Whitehead, A., Wai, N., Ong, S. J. H., Scherer, G. G. & Xu, J. Z. (2019). Equilibrium and dynamic absorption of electrolyte species in cation/anion exchange membranes of vanadium redox flow batteries. ChemSusChem, 12(5), 1076-1083. https://dx.doi.org/10.1002/cssc.201802522
Journal: ChemSusChem
Abstract: Vanadium redox flow batteries (VRFBs) rely on ion exchange membranes (IEMs) to separate the positive and negative compartments while maintaining electrical neutrality of the cell, by allowing the transport of ionic charge carriers. Cation exchange membranes (CEMs) and anion exchange membranes (AEMs), the two principal types of IEM, have both been employed in VRFBs. The performance of these IEMs can be influenced by the absorption of species from the electrolyte. In this study, a typical commercial CEM (Nafion 117) and AEM (FAP 450), were examined with respect to vanadium uptake, after exposure to electrolyte at different states of charge. The two types of membrane were found to behave very differently, with the AEM showing very high selectivity for Vⱽ, which resulted in a significant increase in area-specific resistivity. In contrast, the CEM absorbed Vᴵᴵ more strongly than vanadium in other oxidation states. These findings are essential for the development of an effective membrane for VRFB applications.
URI: https://hdl.handle.net/10356/151155
ISSN: 1864-5631
DOI: 10.1002/cssc.201802522
Rights: © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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