Organic-inorganic hybrid membranes for a PEMFC operation at intermediate temperatures

Je Deok Kim, Toshiyuki Mori, Itaru Homma

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


Recently, polymer electrolyte membrane fuel cells (PEMFCs) have been investigated extensively as a future energy source to solve a global energy and environmental problem due to their high energy conversion efficiency. As a membrane is recognized to be a key element for more efficient PEMFCs, new classes of polymer electrolytes have been investigated elsewhere. We have also studied new temperature-tolerant electrolytes using organic-inorganic materials such as polydimethylsiloxane, polytetramethylene oxide (PTMO), zirconia, and titania materials. 12-phosphotungstic (PWA) and phosphoric acids as a proton source were incorporated in the hydrophilic interface of organic-inorganic hybrid membranes. In this paper, they were synthetically displayed, and the cell performance for intermediate temperature PEFC using a single membrane electrolyte assembly cell was also investigated. The maximum power densities for zirconium phosphate-PTMO and titania-PTMO-PWA composite membranes were 13 and 30 mW cm2, respectively. The cell performance of the membranes increased with increasing cell temperature up to 130°C under saturated humidity conditions. The organic-inorganic hybrid electrolytes synthesized from PTMO with metal alkoxides show promise for applications in intermediate temperature PEFCs.

Original languageEnglish
JournalJournal of the Electrochemical Society
Issue number3
Publication statusPublished - 2006 Feb 14
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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