Electropolymerization of polyaniline on high surface area carbon substrates

Electropolymerization of polyaniline (Pani) was carried out on different high surface area carbon substrates: carbon fiber and reticulated vitreous carbon (RVC™). Due to the different morphology of the RVC™ substrate, a modification of a well established aniline electrodeposition methodology is prop...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2005-04, Vol.578 (1), p.9-15
Main Authors: Dalmolin, Carla, Canobre, Sheila C., Biaggio, Sonia R., Rocha-Filho, Romeu C., Bocchi, Nerilso
Format: Article
Language:English
Subjects:
Carbon fiber
Chemistry
Electrochemical impedance spectroscopy
Electrochemistry
Electropolymerization
Exact sciences and technology
General and physical chemistry
Polyaniline
Reticulated vitreous carbon (RVC™)
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Summary:Electropolymerization of polyaniline (Pani) was carried out on different high surface area carbon substrates: carbon fiber and reticulated vitreous carbon (RVC™). Due to the different morphology of the RVC™ substrate, a modification of a well established aniline electrodeposition methodology is proposed. The electrical and morphological characteristics of the resulting Pani films were strongly affected by the chosen substrate and are analyzed, using electrochemical impedance spectroscopy and scanning electron microscopy, in terms of the current penetration profile within the RVC™ electrode. For the films grown on RVC™ the voltammetric waves were wider, the charge-transfer resistance was higher and the morphology more compact.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2004.12.011