Virtues of composite structures in electrode modification. Preparation and properties of poly (aniline)/Nafion composite films

Duke Orata, Daniel A. Buttry

Research output: Contribution to journalArticle

90 Scopus citations

Abstract

Poly(aniline) (PA) is electropolymerized within thin films of precast Nafion on gold or glassy carbon electrodes. The quartz crystal microbalance (QCM) is used to aid in identification of the ionic species which undergo transport during switching of the PA between its insulating and conducting forms. The QCM frequency changes observed in solutions containing various cationic species suggest that cation transport is dominant for these composite structures. In acidic solution, a consequence of the high transport number for the proton in the composite films is shown to be an enhanced switching rate relative to the simple (non-composite) PA film. The composite PA films appear to be less resistive and therefore more electrochemically well behaved over a wider pH range than the simple PA films.

Original languageEnglish (US)
Pages (from-to)71-82
Number of pages12
JournalJournal of Electroanalytical Chemistry
Volume257
Issue number1-2
DOIs
StatePublished - Dec 23 1988
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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