Bibliographic Details
| Title: |
Electrochemical impedance spectroscopy measurements on time-variant systems: the case of the Volmer-Heyrovský corrosion reaction. Part I: theoretical description |
| Authors: |
Nicolas Murer, Jean-Paul Diard, Bogdan Petrescu |
| Source: |
Journal of Electrochemical Science and Engineering (2024) |
| Publisher Information: |
International Association of Physical Chemists (IAPC), 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Chemistry |
| Subject Terms: |
EIS, non-stationarity, Faradaic, relaxation, potential decay, adsorption, Chemistry, QD1-999 |
| More Details: |
One of the theoretical requirements of electrochemical impedance spectroscopy measurements is that the studied system should not be varying with time. Unfortunately, this is rarely the case of physical systems. In the literature, quite a few methods exist to check and correct a posteriori the effect of time-variance, allowing to use conventional equivalent circuit models to fit and interpret the data. We suggest a different approach where, for a given electrochemical mechanism and specific experimental conditions, assuming stationarity during each measurement, a time- and frequency-dependent expression of the Faradaic impedance is derived from the kinetic equations. The case of a potential relaxation at zero current following an anodic steady-state polarization is considered for a system where a Volmer-Heyrovský corrosion mechanism is supposed to take place. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1847-9286 |
| Relation: |
https://pub.iapchem.org/ojs/index.php/JESE/article/view/2467; https://doaj.org/toc/1847-9286 |
| DOI: |
10.5599/jese.2467 |
| Access URL: |
https://doaj.org/article/de168bbdd2ea410c8af32eeb04779e69 |
| Accession Number: |
edsdoj.168bbdd2ea410c8af32eeb04779e69 |
| Database: |
Directory of Open Access Journals |
