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Pregled bibliografske jedinice broj: 295569

Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations

Horvat-Radošević, Višnja; Kvastek, Krešimir
Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations // Electrochimica Acta, 52 (2007), 17; 5377-5391 doi:10.1016/j.electacta.2007.02.059 (međunarodna recenzija, članak, znanstveni)

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Naslov
Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations

Autori
Horvat-Radošević, Višnja ; Kvastek, Krešimir

Izvornik
Electrochimica Acta (0013-4686) 52 (2007), 17; 5377-5391

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
impedance spectra; conducting polyaniline; high-frequency distortions

Sažetak
Distortions of high-frequency parts of impedance spectra of conducting polyaniline, PANI, film modified Pt electrodes in 0.5 and 0.05 mol dm-3 H2SO4 are analysed in terms of overlapping between impedance of PANI film working electrode (WE) branch and artefact impedance(s) induced by measurements in 2-electrode (symmetrical, PANI vs. PANI and asymmetrical, PANI vs. platinised Pt) and 3-electrode (with conventional reference, RE, and pseudo-reference, PRE, electrode) cells. In impedance measurements with both 2-electrode cell configurations and PANI film WE at equilibrium, high-frequency distortions are generated by contribution of inductive impedance originating from instruments and wirings. Extent of distortions is found inversely proportional to the solution resistance term. In impedance measurements with conventional 3-electrode cell configuration and PANI film WE kept at polarized conditions, relatively high extent of high-frequency distortions is generated by couplings between three electrodes of similar impedances. Distortions are manifested as inductive/capacitive artefact impedance, with lower inductivity and higher capacity for lower solution resistance and vice versa. Low impedance PRE is found useful for simultaneous diminishing of inductive and capacitive artefact impedances, what in some conditions could result with impedance spectra showing minor high-frequency distortions. Use of proper transfer function(s) with impedance of experimental artefacts involved, is in all cases found essential not only for determination of all parameters characterizing fast impedance response of PANI film WE, but for highlighting physical origins and possible ways of control of the content of experimental artefacts in measured impedance spectra too.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo



POVEZANOST RADA

Projekti:
098-0982904-2905 - Elektroaktivni filmovi za ekološki prihvatljivu konverziju i pohranu energije (Horvat-Radošević, Višnja, MZOS ) ( CroRIS)
125-1252973-2576 - Temeljna i primijenjena istraživanja vodljivih polimera (Mandić, Zoran, MZOS ) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Profili:

Avatar Url Višnja Horvat-Radošević (autor)

Avatar Url Krešimir Kvastek (autor)

Poveznice na cjeloviti tekst rada:

doi

Citiraj ovu publikaciju:

Horvat-Radošević, Višnja; Kvastek, Krešimir
Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations // Electrochimica Acta, 52 (2007), 17; 5377-5391 doi:10.1016/j.electacta.2007.02.059 (međunarodna recenzija, članak, znanstveni)
Horvat-Radošević, V. & Kvastek, K. (2007) Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations. Electrochimica Acta, 52 (17), 5377-5391 doi:10.1016/j.electacta.2007.02.059.
@article{article, author = {Horvat-Rado\v{s}evi\'{c}, Vi\v{s}nja and Kvastek, Kre\v{s}imir}, year = {2007}, pages = {5377-5391}, DOI = {10.1016/j.electacta.2007.02.059}, keywords = {impedance spectra, conducting polyaniline, high-frequency distortions}, journal = {Electrochimica Acta}, doi = {10.1016/j.electacta.2007.02.059}, volume = {52}, number = {17}, issn = {0013-4686}, title = {Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations}, keyword = {impedance spectra, conducting polyaniline, high-frequency distortions} }
@article{article, author = {Horvat-Rado\v{s}evi\'{c}, Vi\v{s}nja and Kvastek, Kre\v{s}imir}, year = {2007}, pages = {5377-5391}, DOI = {10.1016/j.electacta.2007.02.059}, keywords = {impedance spectra, conducting polyaniline, high-frequency distortions}, journal = {Electrochimica Acta}, doi = {10.1016/j.electacta.2007.02.059}, volume = {52}, number = {17}, issn = {0013-4686}, title = {Analysis of High-Frequency Distortions in Impedance Spectra of Conducting Polyaniline Film Modified Pt-Electrode Measured with Different Cell Configurations}, keyword = {impedance spectra, conducting polyaniline, high-frequency distortions} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus

Uključenost u ostale bibliografske baze podataka::


  • BIOSIS Previews (Biological Abstracts)
  • CA Search (Chemical Abstracts)
  • Current Technology Index
  • Engineering Index
  • Elsevier biobase

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