Heteropolyacid-encapsulated self-assembled materials for anhydrous proton-conducting electrolytes

Masanori Yamada, Itaru Homma

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

The composite material of heteropolyacid (12-phosphotungstic acid; PWA) and polystyrene sulfonic acid (PSS) construct the PWA-encapsulated material by the self-assembly of -SO 3 H onto the PWA surface; as a result, the fast proton transfer occurred at the interface between the PWA and -SO 3 H, and the encapsulated material indicated the high anhydrous proton conductivity of 1 × 10 -2 S cm -1 at 180°C. These anhydrous proton-conducting materials without the existence of water molecules are quite different from customary ion-exchange membrane, such as Nafion, and may have advantages as an electrolyte membrane for polymer electrolyte membrane fuel cells operating at intermediate temperatures under anhydrous conditions but also for electrochemical devices including electrochromic displays, chemical sensors, and others.

Original languageEnglish
Pages (from-to)20486-20490
Number of pages5
JournalJournal of Physical Chemistry B
Volume110
Issue number41
DOIs
Publication statusPublished - 2006 Oct 19
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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