A sulfonated poly (ether ether ketone) (sPEEK) was tested as the separator in a full alkaline flow battery with 2,6-dihydroxyanthraquinone-ferro/ferricyanide, DHAQ-FeCy, redox couples. Cell performance was compared to that of an identical cell utilizing a perfluorosulfonic acid (PFSA) membrane. Replacement of the PFSA membrane with sPEEK resulted in a 10% power density increase, a 40% decrease in capacity loss per day and an 85-fold decrease in ferricyanide permeation. Though long-term stability of sPEEK in alkaline media requires improvement, these results highlight the potential to produce non-fluorinated membranes with better performance in organic redox flow batteries than the commercially available PFSAs. © The Author(s) 2018.
De Porcellinis, D., Mecheri, B., D’Epifanio, A., Licoccia, S., Granados-Focil, S., Aziz, M.j. (2018). Communication—sulfonated poly (ether ether ketone) as cation exchange membrane for alkaline redox flow batteries. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 165(5), A1137-A1139 [10.1149/2.1291805jes].
Communication—sulfonated poly (ether ether ketone) as cation exchange membrane for alkaline redox flow batteries
De Porcellinis D.;Mecheri B.;D’Epifanio A.;Licoccia S.;
2018-01-01
Abstract
A sulfonated poly (ether ether ketone) (sPEEK) was tested as the separator in a full alkaline flow battery with 2,6-dihydroxyanthraquinone-ferro/ferricyanide, DHAQ-FeCy, redox couples. Cell performance was compared to that of an identical cell utilizing a perfluorosulfonic acid (PFSA) membrane. Replacement of the PFSA membrane with sPEEK resulted in a 10% power density increase, a 40% decrease in capacity loss per day and an 85-fold decrease in ferricyanide permeation. Though long-term stability of sPEEK in alkaline media requires improvement, these results highlight the potential to produce non-fluorinated membranes with better performance in organic redox flow batteries than the commercially available PFSAs. © The Author(s) 2018.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
