Lookup NU author(s): Chenxi Xu,
Professor Keith Scott
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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.
Author(s): Xu C, Scott K, Li Q, Yang J, Wu X
Publication type: Article
Publication status: Published
Journal: Fuel Cells
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
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