Application notes 15 min read

ZFit and multiple impedance diagram fitting (EIS Zfit) – Battery & Corrosion – Application Note 45

Latest updated: August 31, 2021

Abstract

Electrochemical impedance spectroscopy (EIS) measurements are widely implemented in all fields of electrochemistry (e.g. energy and corrosion application). The impedance diagrams are usually fit using equivalent electrical circuits (EC). Often, one can observe a variation of EIS measurements with physical parameters, such as potential or temperature. This behavior results in the variation of the value of the EC parameters. The analysis of EIS measurements at different conditions becomes important in order to understand the physical behavior of the system of interest. In this context, EC-Lab® software provides a powerful and user-friendly tool to fit successive EIS measurements called Z Fit. Z Fit automatically determines (and plots) the successive values of the EC components for a series of impedance diagrams. Its advanced features allow the user to model experimental results.

 

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