TY - JOUR
T1 - Acidic aqueous redox flow battery using 12-phosphotungstic acid and 2,4,5,6-tetrahydroxybenzene-1,3-disulfonic acid as redox couple
AU - Permatasari, Agnesia
AU - Lee, Wonmi
AU - Kwon, Yongchai
N1 - Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A03039981) and the Ministry of Trade, Industry and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT) through the International Cooperative R&D program (Project No. P0018437).
Funding Information:
Ministry of Trade, Industry and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT), Grant/Award Number: P0018437; National Research Foundation of Korea, Grant/Award Number: 2021R1A6A1A03039981 Funding information
Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A03039981) and the Ministry of Trade, Industry and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT) through the International Cooperative R&D program (Project No. P0018437).
Publisher Copyright:
© 2022 John Wiley & Sons Ltd.
PY - 2022/7
Y1 - 2022/7
N2 - In this study, acidic aqueous redox flow battery (ARFB) using 12-phosphotungstic acid (PTA) and 1,2-benzoquinone-3,5-disulfonic acid (Tiron) as negative and positive active materials is suggested. As negative active material, PTA shows high solubility in an acidic state (0.4 M PTA is soluble in 1.0 M sulfuric acid [H2SO4]), negative reaction potential (−0.25 V vs Ag/AgCl), and is linked to four-electron reaction. Regarding positive active material, Tiron is chosen due to its high solubility in H2SO4 (1.5 M Tiron is soluble in 1 M H2SO4) and highly positive reaction potential (0.76 V vs Ag/AgCl) with two-electron related reactions. For preserving its redox reactivity, Tiron is initially transformed to its desirable 2,4,5,6-tetrahydroxybenzene-1,3-disulfonic acid (TironA). As a result, the cell potential of ARFB using PTA and TironA is 0.92 V, while their low viscosities reduce the possibility of precipitation. With this, its cycle stability is well preserved. Regarding the performance of ARFB using PTA and TironA, this maintains cycle stability for more than 170 cycles with capacity retention of 99% and high columbic and energy efficiencies of 99% and 70% at 60 mA cm−2.
AB - In this study, acidic aqueous redox flow battery (ARFB) using 12-phosphotungstic acid (PTA) and 1,2-benzoquinone-3,5-disulfonic acid (Tiron) as negative and positive active materials is suggested. As negative active material, PTA shows high solubility in an acidic state (0.4 M PTA is soluble in 1.0 M sulfuric acid [H2SO4]), negative reaction potential (−0.25 V vs Ag/AgCl), and is linked to four-electron reaction. Regarding positive active material, Tiron is chosen due to its high solubility in H2SO4 (1.5 M Tiron is soluble in 1 M H2SO4) and highly positive reaction potential (0.76 V vs Ag/AgCl) with two-electron related reactions. For preserving its redox reactivity, Tiron is initially transformed to its desirable 2,4,5,6-tetrahydroxybenzene-1,3-disulfonic acid (TironA). As a result, the cell potential of ARFB using PTA and TironA is 0.92 V, while their low viscosities reduce the possibility of precipitation. With this, its cycle stability is well preserved. Regarding the performance of ARFB using PTA and TironA, this maintains cycle stability for more than 170 cycles with capacity retention of 99% and high columbic and energy efficiencies of 99% and 70% at 60 mA cm−2.
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U2 - 10.1002/er.7948
DO - 10.1002/er.7948
M3 - Article
AN - SCOPUS:85127693861
VL - 46
SP - 13013
EP - 13022
JO - International Journal of Energy Research
JF - International Journal of Energy Research
SN - 0363-907X
IS - 9
ER -