Hybrid poly electrolyte materials for fuel cell applications: Design, synthesis, and evaluation of proton-conducting bridged polysilsesquioxanes

Mariya Khiterer, Douglas A. Loy, Christopher J. Cornelius, Cy H. Fujimoto, James H. Small, Theresa M. McIntire, Kenneth J. Shea

Research output: Contribution to journalArticle

45 Scopus citations


A method for the synthesis of chemically and thermally robust sulfonic-acid-containing hybrid membrane materials has been established. These polyelectrolyte membranes are prepared by oxidation of the corresponding disulfide-bridged polysilsesquioxanes. This strategy allows for high acid-group loading. Their microstructure is determined by nitrogen adsorption porosimetry, solid-state NMR spectroscopy, and atomic force microscopy. Application of these hybrid materials as proton-exchange membranes for fuel cells is investigated by measuring their proton conductivity, which increases linearly with increasing sulfonic acid content to 6.2 mS/cm.

Original languageEnglish (US)
Pages (from-to)3665-3673
Number of pages9
JournalChemistry of Materials
Issue number16
StatePublished - Aug 8 2006


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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