Cécile Pot d'or^1*, Richard Chukwu¹, Doriano Brogioli¹, Fabio La Mantia^1*

1 Energiespeicher- und Energiewandlersysteme, Universität Bremen, Bibliothekstraße 1, 28359 Bremen, Germany

* Corresponding authors emails: potdocci@uni-bremen.de, lamantia@uni-bremen.de

DOI10.24435/materialscloud:fn-1y [version v1]

Publication date: Apr 08, 2025

How to cite this record

Cécile Pot d'or, Richard Chukwu, Doriano Brogioli, Fabio La Mantia, Numerical simulation of dynamic electrochemical impedance spectroscopy using a linearization technique, Materials Cloud Archive 2025.56 (2025), https://doi.org/10.24435/materialscloud:fn-1y

Description

We present a simulation of dynamic electrochemical impedance spectroscopy using numerical methods based on the finite element solution of differential equations. While the study of electrochemical systems during operation is of great interest, one is always confronted with challenges due to non-linearities when exciting the system with both a cyclic voltammetry and a multi-sine. We therefore propose a two-component-model, which first solves for the cyclic voltammetry and then calculates the effect of the multi-sine by means of linearization around the cyclic voltammetry of all the variables. We provide two models: (i) the dynamic transfer function model of DEIS during a redox reaction and (ii) a stationary version of model (i). Both models are based on an existing semi-analytical model described in reference #2.

Materials Cloud sections using this data

Files

File name	Size	Description
M1_dynamic_transfer_function_model.mph MD5md5:af8bd1819502e52d7ccf5684bd826c71	12.7 MiB	COMSOL file with the dynamic transfer function model
M1_dynamic_transfer_function_model.java MD5md5:c4fe99364f56cb419419344760ef6f7f	492.5 KiB	COMSOL model as Java file with the dynamic transfer function model
M2-stationary_transfer_function_model.mph MD5md5:df480872a0cdd95b2af76e42f57a4005	8.0 MiB	COMSOL file with the stationary transfer function model
M2-stationary_transfer_function_model.java MD5md5:86b3a6d16a2dceb0f3dc4a87057ec693	453.2 KiB	COMSOL model as Java file with the stationary transfer function model

License

Files and data are licensed under the terms of the following license: Creative Commons Attribution 4.0 International.
Metadata, except for email addresses, are licensed under the Creative Commons Attribution Share-Alike 4.0 International license.

External references

Keywords

Finite element method Dynamic electrochemical impedance spectroscopy Electrochemical system Linearization