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A Quaternary Polybenzimidazole Membrane for Intermediate Temperature Polymer Electrolyte Membrane Fuel Cells

Lookup NU author(s): Chenxi Xu, Emeritus Professor Keith Scott

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Abstract

A quaternary ammonium polybenzimidazole (QPBI) membrane was synthesized for applications in intermediate temperature (100200 degrees C) hydrogen fuel cells. The QPBI membrane was imbibed with phosphoric acid to provide suitable proton conductivity. The proton conductivity of the membrane was 0.051Scm1 at 150 degrees C with the PA acid loading level of 3.5PRU (amount of H3PO4 per repeat unit of polymer QPBI). The QPBI membrane was characterized in terms of composition, structure and morphology by NMR, FTIR, SEM, and EDX. The fuel cell performance with the membrane gave peak power densities of 440 and 240mWcm2 using oxygen and air, respectively, at 175 degrees C.

Publication metadata

Author(s): Xu C, Scott K, Li Q, Yang J, Wu X

Publication type: Article

Publication status: Published

Journal: Fuel Cells

Year: 2013

Volume: 13

Issue: 2

Pages: 118-125

Print publication date: 01/04/2013

Online publication date: 19/12/2012

Acceptance date: 05/04/2013

ISSN (print): 1615-6846

ISSN (electronic): 1615-6854

Publisher: Wiley - VCH Verlag GmbH & Co. KGaA

URL: http://dx.doi.org/10.1002/fuce.201200149

DOI: 10.1002/fuce.201200149

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