EIS measurements on Li-ion batteries EC-Lab® software parameters adjustment (EIS optimizations) – Battery – Application Note 23Latest updated: August 31, 2021
This application note explains many software and hardware considerations that need to be taken into account when setting up an Electrochemical Impedance Spectroscopy experiment on low impedance systems, in particular battery cells. From hardware point of view separating the contact of current-carrying leads and voltage sensing leads is one important parameter. Another one is cable length and/or cable extensions done by the user. On the software part importance of choosing appropriate excitation amplitude (and its definition), predelays, averaging of multiple excitation cycles and drift correction are discussed.
To obtain significant EIS plots, without noise or trouble, experimental parameters should be chosen carefully. Then user must pay attention of the definition of each parameter and test the effects of each one on the results. Moreover, all electrochemistry software is conceived differently, and user must adapt parameters depending on the software. The aim of this note is to help the user obtain good experimental results with EC-Lab® software. For this, a detailed description of some key points (connection, cable length, experimental parameters, …) is given in the following…
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