Computational Approach to Fast Analysis of Electrochemical Impedance Spectroscopy
Cristiano Lo Pò, Stefano Boscarino, Francesco Ruffino
TL;DR
This paper presents a fast computational method for analyzing electrochemical impedance spectroscopy data using a custom algorithm in C on OriginPro.
Contribution
A new C-based fitting algorithm integrated into OriginPro for faster and automated EIS analysis is introduced.
Findings
The algorithm avoids data import/export, significantly speeding up the analysis process.
An automated fitting procedure with initial parameter assignment was successfully implemented.
Custom error functions produced results comparable to reference software in two case studies.
Abstract
Electrochemical Impedance Spectroscopy (EIS) is a widely used technique for characterizing the electrode–electrolyte interface. EIS analysis can be very complex and tedious. In this work, a fitting algorithm written in C is implemented on OriginPro software to avoid the data import/export operation and speed up the analysis. An automated fitting procedure that assigns the initial parameters is implemented for the simplest equivalent circuit. In addition, the possibility of using a custom error function is explored, with results comparable to that of reference software. The developed algorithm is tested on two different case studies.
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Taxonomy
TopicsElectrochemical Analysis and Applications · Electrostatics and Colloid Interactions · Iron oxide chemistry and applications