Method of evaluating the ionic conductance of polypyrrole films and improvement of ionic conductance of polyethylene oxide-incorporated polypyrrole composite

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Abstract

In this study, stainless steel electrode alternate current (ac) impedance associated with direct current (dc) polarization measurements were proposed to successfully evaluate the contribution of ionic conductance (tion) to the bulk conductance of polypyrrole (PPy) in various relative humidities (RH). The fraction of tion, defined as the ratio of (1/Ri) to ((1/Ri)+(1/Re)), was used as a quantitative index for the contribution of ionic conductance. The results showed that the tion are 0.15, 0.29, and 0.46 for PPy in 5, 25, and 50% RH, respectively. Also, the tion can increase from 0.12 to 0.22 in dry nitrogen after PPy was modified with polyethylene oxide (PEO).

Original languageEnglish
Pages (from-to)791-795
Number of pages5
JournalMaterials Chemistry and Physics
Volume77
Issue number3
DOIs
Publication statusPublished - Jan 30 2003
Externally publishedYes

Keywords

  • Fraction of ionic conductance
  • Ionic conductance
  • Polyethylene oxide
  • Polypyrrole

ASJC Scopus subject areas

  • Materials Chemistry

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