Selective anion exchange membranes for high coulombic efficiency vanadium redox flow batteries

Dongyang Chen; Michael A. Hickner; Ertan Agar; E. Caglan Kumbur

doi:10.1016/j.elecom.2012.10.007

Selective anion exchange membranes for high coulombic efficiency vanadium redox flow batteries

Dongyang Chen, Michael A. Hickner, Ertan Agar, E. Caglan Kumbur

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179 Scopus citations

Abstract

A quaternary ammonium functionalized poly(fluorenyl ether) anion exchange membrane (AEM) with extremely low VO^{2 +} permeation was characterized for vanadium redox flow battery (VRFB) application. One hundred percent coulombic efficiency (CE) was achieved for the AEM-based VRFB at all the current densities tested. Comparatively, the CE of a N212 membrane-based VRFB was lower than 94% and varied with charge/discharge current density. At current densities lower than 60 mA cm^{- 2}, the energy effiency of the AEM-based VRFB was higher than that of a device with N212. The cycling performance demonstrated that the AEM-based VRFB was free of capacity fade, which is a consequence of its low VO^{2 +} permeability. These observations are of significant importance for flow batteries that operate intermittently or at moderate current densities.

Original language	English (US)
Pages (from-to)	37-40
Number of pages	4
Journal	Electrochemistry Communications
Volume	26
Issue number	1
DOIs	https://doi.org/10.1016/j.elecom.2012.10.007
State	Published - Jan 2013

All Science Journal Classification (ASJC) codes

Electrochemistry

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10.1016/j.elecom.2012.10.007

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title = "Selective anion exchange membranes for high coulombic efficiency vanadium redox flow batteries",

abstract = "A quaternary ammonium functionalized poly(fluorenyl ether) anion exchange membrane (AEM) with extremely low VO2 + permeation was characterized for vanadium redox flow battery (VRFB) application. One hundred percent coulombic efficiency (CE) was achieved for the AEM-based VRFB at all the current densities tested. Comparatively, the CE of a N212 membrane-based VRFB was lower than 94% and varied with charge/discharge current density. At current densities lower than 60 mA cm- 2, the energy effiency of the AEM-based VRFB was higher than that of a device with N212. The cycling performance demonstrated that the AEM-based VRFB was free of capacity fade, which is a consequence of its low VO2 + permeability. These observations are of significant importance for flow batteries that operate intermittently or at moderate current densities.",

author = "Dongyang Chen and Hickner, {Michael A.} and Ertan Agar and Kumbur, {E. Caglan}",

note = "Funding Information: The work was supported by the Office of Electricity (OE) Delivery and Energy Reliability , U.S. Department of Energy (DOE) under contract DE-AC05-76RL01830 and the Advanced Research Projects Agency—Energy (ARPA-E), U.S. DOE, under Award No. DE-AR0000121 . We also acknowledge the support from the Southern Pennsylvania Ben Franklin Commercialization Institute (Grant No. 001389-002 ).",

year = "2013",

month = jan,

doi = "10.1016/j.elecom.2012.10.007",

language = "English (US)",

volume = "26",

pages = "37--40",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

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AU - Chen, Dongyang

AU - Hickner, Michael A.

AU - Agar, Ertan

AU - Kumbur, E. Caglan

N1 - Funding Information: The work was supported by the Office of Electricity (OE) Delivery and Energy Reliability , U.S. Department of Energy (DOE) under contract DE-AC05-76RL01830 and the Advanced Research Projects Agency—Energy (ARPA-E), U.S. DOE, under Award No. DE-AR0000121 . We also acknowledge the support from the Southern Pennsylvania Ben Franklin Commercialization Institute (Grant No. 001389-002 ).

PY - 2013/1

Y1 - 2013/1

N2 - A quaternary ammonium functionalized poly(fluorenyl ether) anion exchange membrane (AEM) with extremely low VO2 + permeation was characterized for vanadium redox flow battery (VRFB) application. One hundred percent coulombic efficiency (CE) was achieved for the AEM-based VRFB at all the current densities tested. Comparatively, the CE of a N212 membrane-based VRFB was lower than 94% and varied with charge/discharge current density. At current densities lower than 60 mA cm- 2, the energy effiency of the AEM-based VRFB was higher than that of a device with N212. The cycling performance demonstrated that the AEM-based VRFB was free of capacity fade, which is a consequence of its low VO2 + permeability. These observations are of significant importance for flow batteries that operate intermittently or at moderate current densities.

AB - A quaternary ammonium functionalized poly(fluorenyl ether) anion exchange membrane (AEM) with extremely low VO2 + permeation was characterized for vanadium redox flow battery (VRFB) application. One hundred percent coulombic efficiency (CE) was achieved for the AEM-based VRFB at all the current densities tested. Comparatively, the CE of a N212 membrane-based VRFB was lower than 94% and varied with charge/discharge current density. At current densities lower than 60 mA cm- 2, the energy effiency of the AEM-based VRFB was higher than that of a device with N212. The cycling performance demonstrated that the AEM-based VRFB was free of capacity fade, which is a consequence of its low VO2 + permeability. These observations are of significant importance for flow batteries that operate intermittently or at moderate current densities.

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Selective anion exchange membranes for high coulombic efficiency vanadium redox flow batteries

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