Fast proton conductor under anhydrous condition synthesized from 12-phosphotungstic acid and ionic liquid

Je Deok Kim, Shigenobu Hayashi, Toshiyuki Mori, Itaru Honma

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

In this study, we synthesized a molecular hybrid conductor electrolyte using PWA ([H3PW12O40·nH2O]) and [1-butyl-3-methylimidazole][bis-(fluoromethanesulfonyl) amide] ([BMIM][TFSI]) ionic liquid. The [BMIM][TFSI] ionic liquid can interact with the strongly acidic PWA. The hybrids were hydrophilic, and included some water molecules in the structure of the hybrids. The water molecules remained up to 80 °C, contributing to improve conductivity under an anhydrous N2 atmosphere. The conductivity of PWA-[BMIM][TFSI] hybrid under anhydrous conditions increased from 10-4 S/cm to 0.04 S/cm at 60 °C. The conductivity of the hybrids at each temperature was higher than that of pure PWA and [BMIM][TFSI] under anhydrous condition. It can be due to the protonic carriers.

Original languageEnglish
Pages (from-to)963-967
Number of pages5
JournalElectrochimica Acta
Volume53
Issue number2
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes

Keywords

  • 12-Phosphotungstic acids
  • Anhydrous conditions
  • Proton conductivity
  • [BMIM][TFSI] ionic liquid

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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