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https://doi.org/10.5562/cca3454

Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline

Katja Magdić Košiček ; Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 54, HR-10000 Zagreb, Croatia
Višnja Horvat-Radošević ; Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 54, HR-10000 Zagreb, Croatia
Krešimir Kvastek ; Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 54, HR-10000 Zagreb, Croatia

Puni tekst: engleski, pdf (4 MB) str. 463-473 preuzimanja: 170* citiraj
APA 6th Edition
Magdić Košiček, K., Horvat-Radošević, V. i Kvastek, K. (2018). Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline. Croatica Chemica Acta, 91 (4), 463-473. https://doi.org/10.5562/cca3454
MLA 8th Edition
Magdić Košiček, Katja, et al. "Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline." Croatica Chemica Acta, vol. 91, br. 4, 2018, str. 463-473. https://doi.org/10.5562/cca3454. Citirano 28.01.2020.
Chicago 17th Edition
Magdić Košiček, Katja, Višnja Horvat-Radošević i Krešimir Kvastek. "Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline." Croatica Chemica Acta 91, br. 4 (2018): 463-473. https://doi.org/10.5562/cca3454
Harvard
Magdić Košiček, K., Horvat-Radošević, V., i Kvastek, K. (2018). 'Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline', Croatica Chemica Acta, 91(4), str. 463-473. https://doi.org/10.5562/cca3454
Vancouver
Magdić Košiček K, Horvat-Radošević V, Kvastek K. Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline. Croatica Chemica Acta [Internet]. 2018 [pristupljeno 28.01.2020.];91(4):463-473. https://doi.org/10.5562/cca3454
IEEE
K. Magdić Košiček, V. Horvat-Radošević i K. Kvastek, "Frequency Response Analysis of a Nonstationary System: Electrochemical Transition of Polyaniline", Croatica Chemica Acta, vol.91, br. 4, str. 463-473, 2018. [Online]. https://doi.org/10.5562/cca3454

Sažetak
In this work, impedance spectra of polyaniline film electrode recorded at some redox transition potentials have been corrected for nonstationarity by application of Stoynov's 4-D method. The procedure consisted from: a) conventional measurements of a series of impedance spectra under strictly same experimental conditions, which are accompanied by monitoring of real operating time intervals for measurement of each particular impedance spectrum of the series, b) determination of functional dependence(s) between iso-frequency impedance values and operating time, and c) calculations of instantaneous IS for the time instant of the beginning of the first IS measurement. Comparison between measured and instantaneous impedance spectra, and also between their individual impedance parameter values pointed toward significant differences in charge transfer and transport resistance values. The results suggest that erroneous (either underestimated or overestimated) charge transfer and transport resistance values will be obtained if measured impedance spectra were not corrected for nonstationarity.

Creative Commons License This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi
nonstationary impedance spectra; instantaneous impedance spectra; polyaniline film electrode; redox transition states

Hrčak ID: 217072

URI
https://hrcak.srce.hr/217072

Posjeta: 244 *