Journal
SOLID STATE IONICS
Volume 317, Issue -, Pages 201-209Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2018.01.012
Keywords
Fuel cells; High-temperature; Poly(aryl-sulfone-ether benzimidazole); Proton conductivity
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Funding
- University Grants Commission (UGC), New Delhi [201516-PDFSS-2015-17-TAM-10968, F. 18-1/2011(BSR)]
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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 degrees C and acid doped level of 338%), which is comparable to that of the dense membrane (0.033 S cm(-1) at 160 degrees C and 221% acid doping). The nanofiber and dense membrane shows good oxidative stability under Fenton reagent.
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