TY - JOUR
T1 - Utilization of novel alginate membranes developed for quinone based aqueous redox flow batteries
AU - Permatasari, Agnesia
AU - Mara Ikhsan, Muhammad
AU - Henkensmeier, Dirk
AU - Kwon, Yongchai
N1 - Publisher Copyright:
© 2023 The Korean Society of Industrial and Engineering Chemistry
PY - 2023/6/25
Y1 - 2023/6/25
N2 - Alginate (Alg)-based mambranes are explored for use in aqueous redox flow batteries (ARFBs). Alg is a cheap natural material of low toxicity. To improve the properties of pristine Alg membranes, they are ionically crosslinked with calcium chloride (CaCl2) or alternatively treated with organic solvents. While the effect of CaCl2 is negligible, membranes treated with tetrahydrofuran (THF) or chloroform (THF-Alg and Chlor-Alg) show higher tensile strength and Young's modulus than Alg and Ca-Alg membranes. All four membranes are tested in ARFBs including TironA and 2,7-anthraquinone disulfonic acid as redox couple. A significant increase in voltage efficiency (VE) is observed with the organic solvent-treated membranes (70.9, 70.6, 73.0 and 74.3 % for Alg, Ca-Alg, Chlor-Alg and THF-Alg membranes), while VE of ARFB including Nafion 117 is 73.0 %, meaning that ARFB including THF-Alg shows a better VE. This is partly due to the area specific resistance (ASR). More specifically, when ASR of 70 μm thick THF-Alg and 200 μm thick Nafion 117 membranes submerged in 2 M sulfuric acid is measured, they show 76.7 and 100.6 mΩ cm2. This difference in ASR promotes the rapid increase in VE of ARFB including THF-Alg membrane.
AB - Alginate (Alg)-based mambranes are explored for use in aqueous redox flow batteries (ARFBs). Alg is a cheap natural material of low toxicity. To improve the properties of pristine Alg membranes, they are ionically crosslinked with calcium chloride (CaCl2) or alternatively treated with organic solvents. While the effect of CaCl2 is negligible, membranes treated with tetrahydrofuran (THF) or chloroform (THF-Alg and Chlor-Alg) show higher tensile strength and Young's modulus than Alg and Ca-Alg membranes. All four membranes are tested in ARFBs including TironA and 2,7-anthraquinone disulfonic acid as redox couple. A significant increase in voltage efficiency (VE) is observed with the organic solvent-treated membranes (70.9, 70.6, 73.0 and 74.3 % for Alg, Ca-Alg, Chlor-Alg and THF-Alg membranes), while VE of ARFB including Nafion 117 is 73.0 %, meaning that ARFB including THF-Alg shows a better VE. This is partly due to the area specific resistance (ASR). More specifically, when ASR of 70 μm thick THF-Alg and 200 μm thick Nafion 117 membranes submerged in 2 M sulfuric acid is measured, they show 76.7 and 100.6 mΩ cm2. This difference in ASR promotes the rapid increase in VE of ARFB including THF-Alg membrane.
KW - 2,7-anthraquinone disulfonic acid
KW - Alginate-based mambranes
KW - Membranes treated with chloroform
KW - Quinone based aqueous redox flow battery
KW - TironA
UR - http://www.scopus.com/inward/record.url?scp=85149871427&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2023.02.027
DO - 10.1016/j.jiec.2023.02.027
M3 - Article
AN - SCOPUS:85149871427
SN - 1226-086X
VL - 122
SP - 264
EP - 273
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -