Synthesis and proton conducting properties of zirconia bridged hydrocarbon/phosphotungstic acid hybrid materials

Je Deok Kim, Itaru Honma

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

Recently, the organic/inorganic hybrid materials with flexibility, thermal, and chemical stabilities are extensively studied for the application of temperature tolerant polymer electrolyte fuel cells. This paper reports the preparation and properties of sol-gel derived proton conducting organic/inorganic materials based on zirconia bridged hydrocarbon phosphotungstic acids. The materials are molecular hybrids where linear hydrocarbons such as trimethylene glycols (TMGs) or octamethylene glycols (OMGs) are covalently bonded to zirconia interface to form macromolecular organic/inorganic networks. The hybrid materials become proton conducting polymer electrolytes by the addition of 12-phosphotungstic acids. The hybrid materials showed high thermal stability, and high protonic conductivity of 4 × 10-3Scm-1 under saturated humidity condition at 150°C. The materials can be expected to be used for the application of temperature tolerant polymer electrolyte fuel cell.

Original languageEnglish
Pages (from-to)3179-3183
Number of pages5
JournalElectrochimica Acta
Volume49
Issue number19
DOIs
Publication statusPublished - 2004 Aug 15
Externally publishedYes

Keywords

  • Hydrocarbon
  • Methylene glycol
  • Organic/inorganic hybrid
  • PWA
  • Polymer electrolyte fuel cell
  • Zirconia

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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