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


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


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

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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