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 language | English |
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Pages (from-to) | 791-795 |
Number of pages | 5 |
Journal | Materials Chemistry and Physics |
Volume | 77 |
Issue number | 3 |
DOIs | |
Publication status | Published - Jan 30 2003 |
Externally published | Yes |
Keywords
- Fraction of ionic conductance
- Ionic conductance
- Polyethylene oxide
- Polypyrrole
ASJC Scopus subject areas
- Materials Chemistry