How can one determine impedances at different characteristic frequency values in an EIS curve?

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ekagra gupta
ekagra gupta on 11 Jun 2022
I have an EIS curve of a Li ion battery and I had characteristic frequency (fmax and fmin) of the curve. How can I calculate or have an idea about the charge-transfer or diffusion impedance (warburg)?
The figure above has one local minima and one local maxima (characteristic frequencies). How can one determine the impedances based on these characteristic frequencies?

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