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A polytetrafluoroethylene/quaternized polysulfone membrane for high temperature polymer electrolyte membrane fuel cells

Lookup NU author(s): Emeritus Professor Keith Scott

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Abstract

A polytetrafluoroethylene (FTFE)/quaternized polysulfone (QNPSU) composite membrane has been fabricated for use in proton exchange membrane fuel cells (PEMFCs) The composite membrane is made by immobilizing a QNPSU solution Into a hydrophobic porous FTFE membrane The structure of the composite membrane is examined by SEM and EDX The ionic conductivity of the FTFE/QNPSU membrane at a relative humidity lower than 05% and a temperature of 180 C is greater than 03 S cm(-1) when loaded with 400% H3PO4 A hydrogen fuel cell with this membrane operating at 2 0 atmosphere absolute (atma) pressure and 175 C gives voltages >04 V at current densities of 1 0A cm(-2) using oxygen (c) 2010 Elsevier B V All rights reserved

Publication metadata

Author(s): Li MQ, Scott K

Publication type: Article

Publication status: Published

Journal: Journal of Power Sources

Year: 2011

Volume: 196

Issue: 4

Pages: 1894-1898

Print publication date: 20/10/2011

ISSN (print): 0378-7753

ISSN (electronic): 1873-2755

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.jpowsour.2010.10.027

DOI: 10.1016/j.jpowsour.2010.10.027

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