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Title: Sulfonated poly (ether ether ketone)-based proton exchange membranes for vanadium redox battery applications
Authors: Winardi, Suminto
Raghu, Subash Chandrabose
Oo, Moe Ohnmar
Yan, Qingyu
Wai, Nyunt
Lim, Tuti Mariana
Skyllas-Kazacos, Maria
Keywords: DRNTU::Engineering::Materials::Energy materials
Issue Date: 2013
Source: Winardi, S., Raghu, S. C., Oo, M. O., Yan, Q., Wai, N., Lim, T. M., et al. (2014). Sulfonated poly (ether ether ketone)-based proton exchange membranes for vanadium redox battery applications. Journal of Membrane Science, 450, 313-322.
Series/Report no.: Journal of membrane science
Abstract: Low cost sulfonated poly (ether ether ketone) membranes have been successfully prepared and optimized at various sulfonation conditions by casting method for vanadium redox battery applications. The optimized SPEEK membrane was initially tested in the G1 Vanadium Redox Battery (VRB) before being evaluated in the G2 Vanadium Bromide Redox Flow Battery (V/Br), and the performance was compared to that of Nafion 117. From the G1 VRB performance tests, the energy efficiency of the membrane was found to be 77%, slightly higher than Nafion 117 which gave 73% at current density 40 mA/cm2. For the first time, the SPEEK membrane was evaluated in the G2 V/Br at two different ratios of bromine complexing agents and the performance was assessed from the measured cell efficiencies. At 4 mA/cm2, the optimum energy efficiency was 76% using SPEEK in the presence of 0.19 M MEM and 0.56 M MEP, when compared to 75% obtained with Nafion 117. Similar to Nafion 117, SPEEK also exhibits excellent chemical stability in the highly oxidizing electrolytes. The SPEEK membrane thus appears to be a promising candidate for both G1 and G2 VRB applications. Keywords: Vanadium redox battery; Sulfonated polymer; Ion exchange membrane.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2013.09.024
Rights: © 2014 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of membrane science, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
MSE Journal Articles

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