Physical properties obtained from measurement model analysis of impedance measurements
•Voigt measurement model used to extract system capacitance, ohmic and polarization resistance.•Synthetic data used to confirm approach.•Approach can extract high frequency and low frequency ohmic resistances for systems exhibiting an ohmic impedance.•Meaningful properties identified without a proce...
Gespeichert in:
Veröffentlicht in: | Electrochimica acta 2020-09, Vol.354, p.136747, Article 136747 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | •Voigt measurement model used to extract system capacitance, ohmic and polarization resistance.•Synthetic data used to confirm approach.•Approach can extract high frequency and low frequency ohmic resistances for systems exhibiting an ohmic impedance.•Meaningful properties identified without a process model.
The Voigt measurement model is regressed to synthetic data to demonstrate its ability to extract capacitance, ohmic resistance, and polarization resistance values from impedance data. The systems explored include a Randles circuit, films with exponential and power-law distributions of resistivity, systems exhibiting geometric capacitance, and systems showing geometry-induced frequency dispersion. The Voigt measurement model is also regressed to complex capacitance to identify the high-frequency limit in Cole–Cole plots. The measurement model is shown to provide a useful means to estimate properties characteristic of electrochemical systems. |
---|---|
ISSN: | 0013-4686 1873-3859 |
DOI: | 10.1016/j.electacta.2020.136747 |