Stable nanofibrous poly(aryl sulfone ether benzimidazole) membrane with high conductivity for high temperature PEM fuel cells

Stable nanofibrous poly(aryl sulfone ether benzimidazole) membrane with high conductivity for... Novel electrospun nanofiber poly(aryl sulfone ether benzimidazole) (SO2-OPBI) membrane is synthesized for enhanced the proton conductivity and chemical stability. Incorporation of the flexible aryl sulfone- and ether-linkages in the polymer backbone are improved the physico-chemical properties of membranes. We prepared different types of membranes, namely dense SO2-OPBI membrane, nanofiber SO2-OPBI and m-PBI membrane and evaluated their physico-chemical properties for suitability application of high temperature PEM fuel cells. Interestingly, the nanofiber membranes possessed a greatly increased proton conductivity (0.0667 S cm−1 at 160 °C and acid doped level of 338%), which is comparable to that of the dense membrane (0.033 S cm−1 at 160 °C and 221% acid doping). The nanofiber and dense membrane shows good oxidative stability under Fenton reagent. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Solid State Ionics Elsevier

Stable nanofibrous poly(aryl sulfone ether benzimidazole) membrane with high conductivity for high temperature PEM fuel cells

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0167-2738
eISSN
1872-7689
D.O.I.
10.1016/j.ssi.2018.01.012
Publisher site
See Article on Publisher Site

Abstract

Novel electrospun nanofiber poly(aryl sulfone ether benzimidazole) (SO2-OPBI) membrane is synthesized for enhanced the proton conductivity and chemical stability. Incorporation of the flexible aryl sulfone- and ether-linkages in the polymer backbone are improved the physico-chemical properties of membranes. We prepared different types of membranes, namely dense SO2-OPBI membrane, nanofiber SO2-OPBI and m-PBI membrane and evaluated their physico-chemical properties for suitability application of high temperature PEM fuel cells. Interestingly, the nanofiber membranes possessed a greatly increased proton conductivity (0.0667 S cm−1 at 160 °C and acid doped level of 338%), which is comparable to that of the dense membrane (0.033 S cm−1 at 160 °C and 221% acid doping). The nanofiber and dense membrane shows good oxidative stability under Fenton reagent.

Journal

Solid State IonicsElsevier

Published: Apr 1, 2018

References

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