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ECSHackWeek / impedance.py

A Python package for working with electrochemical impedance data
MIT License
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Reproducing Inductance Effect in Equivalent Circuit Modelling (Help Needed) #210

Closed Muneebing closed 1 year ago

Muneebing commented 2 years ago

Dear Community, I have some EIS data for a certain cell type and it's Nyquist Plot looks pretty weird as the negative imaginary impedance is also quite high, and for this data I want to fit an equivalent circuit model, where I don't want to ignore the negative imaginary impedance points. So when i try to fit the model with the inductor included in the circuit model then the code some how does not fit the model quite well regardless of how many RC-elements I add (Please see the screenshot "Fit_with_L" where red is original data and blue is the fit) but when I fit the data without the inductor in the circuit model then it only fits to the positive side of the graph (please see screenshot "Fit_without_L").
Could the community members please help me create the equivalent circuit model for this EIS data. I am also attaching the CSV file of the EIS data, which is named as "Messdaten_EIS_MiEV" Much thanks in advance!

Fit_with_L Fit_without_L

Messdaten_EIS_MiEV.csv

mdmurbach commented 1 year ago

Going to go ahead and close this issue @Muneebing, but if you still have questions or issues, please feel free to reopen this issue or as a question in the discussion section