Virtues of Composite Structures in Electrode Modification. Preparation and Properties of Poly(aniline)/Nafion Composite Films

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. Keywords: Electrochemistry, Quartz crystal microbalance, Conducting polymer, Modified electrode.

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Document Details

Document Type
Technical Report
Publication Date
Jul 09, 1988
Accession Number
ADA196011

Entities

People

  • Daniel A. Buttry
  • Duke O. Orata

Organizations

  • University of Wyoming

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  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Chemical Engineering
  • Chemistry
  • Composite Structures
  • Diffusion Coefficient
  • Electrochemistry
  • Electrodes
  • Engineering
  • Films
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Military Research
  • Physics
  • Quartz Crystal Microbalances
  • Universities

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  • Electrochemical Surface Science
  • Mathematics or Statistics
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene