Synthesis and properties of ceramics-polymer composite membranes as high temperature proton conducting electrolytes

J. M. Bae, I. Honma, S. Hirakawa

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6 Citations (Scopus)

Abstract

Proton-conducting inorganic/organic composite membranes, which were mechanically flexible, were fabricated, and their conduction properties were characterised for use as polymer electrolyte fuel cells (PEFCs) operating at relatively higher temperatures (100-150°C). SiO2/PEO (polyethylene oxide) membranes doped with acidic molecules (monododecylphosphate) were fabricated by using the sol-gel route, and the proton conductivities were measured using impedance spectroscopy. The composite electrolytes showed reasonable electrical-conductivity values (10-3-10-4 S/cm) up to 150° C and differential thermal analysis and thermogravimetric analysis (DTA/TG) data showed that the membranes were thermally stable up to 350°C, possibly due to the SiO2 backbone framework.

Original languageEnglish
Pages (from-to)S315-S319
JournalJournal of the Korean Physical Society
Volume35
Issue numberSUPPL. 2
Publication statusPublished - 1999 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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