Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/106883
Title: Effect of bromine complexing agents on the performance of cation exchange membranes in second-generation vanadium bromide battery
Authors: Lim, Tuti Mariana
Skyllas-Kazacos, Maria
Winardi, Suminto
Poon, Grace
Ulaganathan, Mani
Parasuraman, Aishwarya
Yan, Qingyu
Wai, Nyunt
Keywords: DRNTU::Engineering::Materials
Issue Date: 2015
Source: Winardi, S., Poon, G., Ulaganathan, M., Parasuraman, A., Yan, Q., Wai, N., et al. (2015). Effect of bromine complexing agents on the performance of cation exchange membranes in second-generation vanadium bromide battery. ChemPlusChem, 80(2), 376-381.
Series/Report no.: ChemPlusChem
Abstract: The effect of bromine complexing agents, N-ethyl-N-methyl-morpholinium bromide (MEM) and N-ethyl-N-methyl-pyrrolidinium bromide (MEP) on the performance of different perfluorinated cation exchange membranes, ChiNaf and VF11, is assessed in the G2 vanadium bromide battery (V/Br). It is noted that in the absence of MEM and MEP, the thicker ChiNaf (50 μm) membrane shows a higher energy efficiency at a current density of 20 mA cm−2. A preliminary test of ChiNaf at two different concentration ratios of MEM and MEP evaluated at 4 mA cm−2 shows that a mixture of 0.19 m MEM and 0.56 m MEP provides a slightly higher cell efficiency than the other tested compositions. However, better cell performance is obtained with the VF11 (25 μm) membrane at 4 mA cm−2 using 0.19 m MEM and 0.56 m MEP. Further studies using VF11 with a mixture of 0.19 m MEM and 0.56 m MEP at 20 mA cm−2 provide direct evidence that the addition of MEM+MEP lowers the cell performance through a reduction in voltage efficiency. The increased membrane resistance after the introduction of MEM and MEP marks the formation of an organic layer after bromine reacts with MEM and MEP and is deposited onto the membrane.
URI: https://hdl.handle.net/10356/106883
http://hdl.handle.net/10220/25179
ISSN: 2192-6506
DOI: 10.1002/cplu.201402260
Rights: © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
ERI@N Journal Articles
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