TY - JOUR
T1 - A high-rate nonaqueous organic redox flow battery
AU - Xu, Donghan
AU - Zhang, Cuijuan
AU - Zhen, Yihan
AU - Zhao, Yicheng
AU - Li, Yongdan
N1 - Funding Information:
The work was financially supported by the National Natural Science Foundation of China ( 21636007 ).
Publisher Copyright:
© 2021 Elsevier B.V.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5/31
Y1 - 2021/5/31
N2 - Azobenzene (azoB) is a promising anode active material for nonaqueous redox flow battery (NARFB), but the battery performance assembled with azoB is rather poor. Here, we show that the rate performance of NARFB with azoB and 2,5-di-tert-butyl-1-methoxy-4-[2′-methoxyethoxy] benzene (DBMMB) as anolyte and catholyte active materials can be significantly enhanced by optimizing the solvent, supporting electrolyte, and membrane. The synergistic interaction among active materials, solvent (acetonitrile), supporting electrolyte (tetraethylammonium bis(trifluoromethylsulfonyl)imide), and membrane (Daramic 175) contributes to the high battery performance. It exhibits an energy efficiency of 63.5% even at an ultra-high current density of 100 mA cm−2. Furthermore, the battery delivers a peak power density of 336 mW cm−2 at the current density of 240 mA cm−2 with 0.25 M active materials, which is a new benchmark for NARFBs.
AB - Azobenzene (azoB) is a promising anode active material for nonaqueous redox flow battery (NARFB), but the battery performance assembled with azoB is rather poor. Here, we show that the rate performance of NARFB with azoB and 2,5-di-tert-butyl-1-methoxy-4-[2′-methoxyethoxy] benzene (DBMMB) as anolyte and catholyte active materials can be significantly enhanced by optimizing the solvent, supporting electrolyte, and membrane. The synergistic interaction among active materials, solvent (acetonitrile), supporting electrolyte (tetraethylammonium bis(trifluoromethylsulfonyl)imide), and membrane (Daramic 175) contributes to the high battery performance. It exhibits an energy efficiency of 63.5% even at an ultra-high current density of 100 mA cm−2. Furthermore, the battery delivers a peak power density of 336 mW cm−2 at the current density of 240 mA cm−2 with 0.25 M active materials, which is a new benchmark for NARFBs.
KW - Electrochemical energy storage
KW - Nonaqueous redox flow battery
KW - Organic electroactive material
UR - http://www.scopus.com/inward/record.url?scp=85103270782&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2021.229819
DO - 10.1016/j.jpowsour.2021.229819
M3 - Article
AN - SCOPUS:85103270782
SN - 0378-7753
VL - 495
JO - Journal of Power Sources
JF - Journal of Power Sources
M1 - 229819
ER -
