Development and characterization of acid-doped polybenzimidazole/sulfonated polysulfone blend polymer electrolytes for fuel cells

C. Hasiotis, Qingfeng Li, V. Deimede, J. K. Kallitsis, C. G. Kontoyannis, Niels Bjerrum

    Research output: Contribution to journalJournal articleResearchpeer-review

    530 Downloads (Pure)

    Abstract

    Polymeric membranes from blends of sulfonated polysulfones (SPSF) and polybenzimidazole (PBI) doped with phosphoric acid were developed as potential high-temperature polymer electrolytes for fuel cells and other electrochemical applications. The water uptake and acid doping of these polymeric membranes were investigated. Ionic conductivity of the membranes was measured in relation to temperature, acid doping level, sulfonation degree of SPSF, relative humidity, and blend composition. The conductivity of SPSF was of the order of 10/sup -3/ S cm/sup -1/. In the case of blends of PBI and SPSF it was found to be higher than 10/sup -2/ S cm/sup -1/. Much improvement in the mechanical strength is observed for the blend polymer membranes, especially at higher temperatures. Preliminary work has demonstrated the feasibility of these polymeric membranes for fuel-cell applications
    Original languageEnglish
    JournalJournal of The Electrochemical Society
    Volume148
    Issue number5
    Pages (from-to)A513-A519
    ISSN0013-4651
    DOIs
    Publication statusPublished - 2001

    Bibliographical note

    Copyright The Electrochemical Society, Inc. [2001]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

    Fingerprint Dive into the research topics of 'Development and characterization of acid-doped polybenzimidazole/sulfonated polysulfone blend polymer electrolytes for fuel cells'. Together they form a unique fingerprint.

    Cite this