Communication—sulfonated poly (ether ether ketone) as cation exchange membrane for alkaline redox flow batteries

Authors

D. De Porcellinis, Università degli Studi di Roma "Tor Vergata"
B. Mecheri, Università degli Studi di Roma "Tor Vergata"
A. D’Epifanio, Università degli Studi di Roma "Tor Vergata"
S. Licoccia, Università degli Studi di Roma "Tor Vergata"
S. Granados-Focil, Clark UniversityFollow
M. J. Aziz, Harvard John A. Paulson School of Engineering and Applied Sciences

Document Type

Article

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.

Publication Title

Journal of the Electrochemical Society

Publication Date

1-2018

Volume

165

Issue

5

First Page

A1137

Last Page

A1139

ISSN

0013-4651

DOI

10.1149/2.1291805jes

Repository Citation

De Porcellinis, D.; Mecheri, B.; D’Epifanio, A.; Licoccia, S.; Granados-Focil, S.; and Aziz, M. J., "Communication—sulfonated poly (ether ether ketone) as cation exchange membrane for alkaline redox flow batteries" (2018). Chemistry. 78.
https://commons.clarku.edu/chemistry/78