High-temperature-tolerant, Proton-conducting polytetramethylene oxide/zirconia hybrid membranes

Je Deok Kim, Itaru Honma

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Nanohybrid membrane of zirconia/polytetramethylene oxide synthesized by sol-gel processes was shown to possess flexible and temperature-tolerant properties. The polymeric membrane showed enhanced thermal stability up to 300°C due to the presence of cross-linkable inorganic nanophase in the hybrid macromolecular matrix. The membrane becomes proton-conducting polymer electrolyte when added with 12-phosphotungstic acid (PWA) or soaked by phosphoric acid. The proton-conducting properties of the hybrid membranes with various PWA or phosphoric acid concentrations were investigated in the temperature range from room temperature to 150°C under saturated humidity conditions. The flexible and large-sized hybrid polymer membrane has been found to have high proton conductivities from 1 × 10-3 to 5 × 10-2 S/cm under saturated humidity condition between 100 and 150°C.

Original languageEnglish
Pages (from-to)A1396-A1401
JournalJournal of the Electrochemical Society
Issue number9
Publication statusPublished - 2004 Oct 19
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry


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