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Pregled bibliografske jedinice broj: 308889

Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode

Horvat-Radošević, Višnja; Kvastek, Krešimir
Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode // Journal of electroanalytical chemistry, 613 (2008), 2; 139-150 doi:10.1016/j.jelechem.2007.10.019 (međunarodna recenzija, članak, znanstveni)

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Naslov
Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode

Autori
Horvat-Radošević, Višnja ; Kvastek, Krešimir

Izvornik
Journal of electroanalytical chemistry (1572-6657) 613 (2008), 2; 139-150

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

Ključne riječi
impedance spectra ; experimental artefacts ; pseudo-reference electrode

Sažetak
This paper is concerned with the prediction and quantitative evaluation of experimental artefacts that appear in high-frequency parts of impedance spectra of Pt electrodes modified by conducting polyaniline (PANI) thin films in 0.05 mol dm-3 H2SO4. These spectra were measured using a three-electrode cell and a combination of conventional reference (RE) and pseudo-reference (PRE) electrodes. Fletcher's transfer function was used for numerical simulations and model-based analysis of the measured impedances. This function describes a three-terminal network involving experimental artefacts generated by couplings between the three electrodes. Explicit fittings were performed to the impedance spectra, as measured with the PRE placed in different external positions and connected to the RE by different connecting capacitors (Cc), in order to generate information for various hidden parameters - specifically, the impedances of the working electrode (WE), the counter electrode (CE), the RE, the PRE, and the stray capacities induced between the three electrodes (CRE/WE, CCE/WE and CRE/CE). The obtained results suggest that the PRE put in any external position relative to the RE initiates formation of: a) beneficially lower levels of experimental artefacts based on overall stray-capacity of the cell, and b) detrimentally higher levels of experimental artefacts originating primarily from impedance of PRE (ZRE/PRE) and increases of CRE/CE which is facilitated by an increase of Cc and the distance between PRE and RE.

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 dx.doi.org www.sciencedirect.com

Citiraj ovu publikaciju:

Horvat-Radošević, Višnja; Kvastek, Krešimir
Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode // Journal of electroanalytical chemistry, 613 (2008), 2; 139-150 doi:10.1016/j.jelechem.2007.10.019 (međunarodna recenzija, članak, znanstveni)
Horvat-Radošević, V. & Kvastek, K. (2008) Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode. Journal of electroanalytical chemistry, 613 (2), 139-150 doi:10.1016/j.jelechem.2007.10.019.
@article{article, author = {Horvat-Rado\v{s}evi\'{c}, Vi\v{s}nja and Kvastek, Kre\v{s}imir}, year = {2008}, pages = {139-150}, DOI = {10.1016/j.jelechem.2007.10.019}, keywords = {impedance spectra, experimental artefacts, pseudo-reference electrode}, journal = {Journal of electroanalytical chemistry}, doi = {10.1016/j.jelechem.2007.10.019}, volume = {613}, number = {2}, issn = {1572-6657}, title = {Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode}, keyword = {impedance spectra, experimental artefacts, pseudo-reference electrode} }
@article{article, author = {Horvat-Rado\v{s}evi\'{c}, Vi\v{s}nja and Kvastek, Kre\v{s}imir}, year = {2008}, pages = {139-150}, DOI = {10.1016/j.jelechem.2007.10.019}, keywords = {impedance spectra, experimental artefacts, pseudo-reference electrode}, journal = {Journal of electroanalytical chemistry}, doi = {10.1016/j.jelechem.2007.10.019}, volume = {613}, number = {2}, issn = {1572-6657}, title = {Quantitative evaluation of experimental artefacts in impedance spectra of conducting polyaniline thin films measured using pseudo-reference electrode}, keyword = {impedance spectra, experimental artefacts, pseudo-reference electrode} }

Časopis indeksira:


  • 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::


  • CA Search (Chemical Abstracts)
  • INSPEC
  • World Aluminum Abstracts
  • Engineering Index
  • Metal Abstracts

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