Proton conductivity of zwitterionic-type molecular solids under intermediate temperature and anhydrous conditions

Masanori Yamada, Itaru Honma

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Anhydrous proton conducting material for polymer electrolyte membrane fuel cell (PEFC) was prepared by the mixing of zwitterionic-type molecular solid 3-pyridinesulfonic acid (PS) and organic acid methylenediphosphonic acid (MP). As a result, PS molecule, which has sulfonic acid and pyridine group in its structure, showed the proton conductivity of 4 × 10-5 S cm -1 at 160°C under anhydrous condition. Surprisingly, by the mixing of MP to PS material, the PS-MP composite material exhibited a conductivity of 2 × 10-3 S cm-1. Moreover, the conductivity of PS-MP composite material did not decrease under the heating at 160°C for 50 h.

Original languageEnglish
Pages (from-to)324-328
Number of pages5
JournalChemical Physics Letters
Volume402
Issue number4-6
DOIs
Publication statusPublished - 2005 Feb 4
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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