Multiphase polymer membranes for direct methanol fuel cell

Sung Chul Kim, Dong Hwee Kim, Jisu Choi, Yo Han Kwon, Sang Young Lee

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The purpose of the present work is the development of new multiphase polymer electrolyte membranes substituting Nafion. To reduce the methanol permeability and the cost of the current Nafion membranes, sulfonated hydrocarbon membranes of polysulfone and polyether ketone were blended with nonsulfonated and hydrophobic polysulfone or polyether ketone. The sulfonated phase will act as the proton conducting phase and the nonsulfonated, hydrophobic phase acts as the methanol barrier. By forming the spinodal (co-continuous) morphology through controlling the phase separation kinetics during the casting of the membranes, the continuous hydrophobic phase will restrict the swelling of the neighboring hydrophilic phase (the proton conducting phase) and thus reducing the methanol cross-over through the free water in the hydrophilic conducting phase. Semi-IPN's of crosslinked sulfonated polysufone and nonsulfonated polysulfone membranes were also evaluated as the multiphase polymer membranes for direct methanol fuel cell.

    Original languageEnglish
    Title of host publicationAmerican Chemical Society - 237th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
    Publication statusPublished - 2009
    Event237th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Salt Lake City, UT, United States
    Duration: 2009 Mar 222009 Mar 26

    Publication series

    NameACS National Meeting Book of Abstracts
    ISSN (Print)0065-7727

    Other

    Other237th National Meeting and Exposition of the American Chemical Society, ACS 2009
    Country/TerritoryUnited States
    CitySalt Lake City, UT
    Period09/3/2209/3/26

    ASJC Scopus subject areas

    • General Chemistry
    • General Chemical Engineering

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