Protonic conducting properties of sol-gel derived organic/inorganic nanocomposite membranes doped with acidic functional molecules

Itaru Homma, Y. Takeda, J. M. Bae

Research output: Contribution to journalArticlepeer-review

158 Citations (Scopus)

Abstract

High temperature protonic conducting polymer membranes provide new technological applications in electrochemical devices including electrochromic displays, chemical sensors, fuel cells and others. Organic/inorganic nanocomposite membranes consisting of SiO2/PEO (polyethylene oxides) hybrids are a remarkable family of isotropic, flexible, amorphous polymer materials, which have been synthesized through sol-gel processes. The hybrid membrane doped with acidic moieties such as monododecylphosphate or phosphotungstic acid shows good protonic conductivities at high temperatures above 100°C. The protonic conducting membrane was found to be thermally stable at high temperatures because of the inorganic SiO2 framework in the nanocomposite matrix.

Original languageEnglish
Pages (from-to)255-264
Number of pages10
JournalSolid State Ionics
Volume120
Issue number1
DOIs
Publication statusPublished - 1999 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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