Electropolymerization of pyrrole on a tantalum electrode

K. Yamamoto; Y. S. Park; S. Takeoka; E. Tsuchida

doi:10.1016/0022-0728(91)85302-6

Electropolymerization of pyrrole on a tantalum electrode

K. Yamamoto, Y. S. Park, S. Takeoka, E. Tsuchida

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

14 Citations (Scopus)

Abstract

Electropolymerization of pyrrole was carried out on tantalum as a base metal electrode. The Ta electrode retards polymerization at lower pyrrole concentrations because of the formation of insulating Ta₂O₅. However, at high concentrations of pyrrole, the polymerization proceeds efficiently to yield a polypyrrole (PPy) film, similar to that on a Pt electrode. The PPy film on a Ta electrode shows the same electroactivity and electric conductivity as that on a Pt electrode. Electropolymerization on Ta is accompanied by a decrease in electrode area due to the formation of the Ta₂O₅, the behavior of which is the only difference from that on Pt.

Original language	English
Pages (from-to)	171-181
Number of pages	11
Journal	Journal of Electroanalytical Chemistry
Volume	318
Issue number	1-2
DOIs	https://doi.org/10.1016/0022-0728(91)85302-6
Publication status	Published - 1991 Nov 25

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ASJC Scopus subject areas

Analytical Chemistry
Chemical Engineering(all)
Electrochemistry

Cite this

Yamamoto, K., Park, Y. S., Takeoka, S., & Tsuchida, E. (1991). Electropolymerization of pyrrole on a tantalum electrode. Journal of Electroanalytical Chemistry, 318(1-2), 171-181. https://doi.org/10.1016/0022-0728(91)85302-6

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AB - Electropolymerization of pyrrole was carried out on tantalum as a base metal electrode. The Ta electrode retards polymerization at lower pyrrole concentrations because of the formation of insulating Ta2O5. However, at high concentrations of pyrrole, the polymerization proceeds efficiently to yield a polypyrrole (PPy) film, similar to that on a Pt electrode. The PPy film on a Ta electrode shows the same electroactivity and electric conductivity as that on a Pt electrode. Electropolymerization on Ta is accompanied by a decrease in electrode area due to the formation of the Ta2O5, the behavior of which is the only difference from that on Pt.

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10.1016/0022-0728(91)85302-6