impedance.py
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Issues with TLMQ model
I've been using impedance.py to fit a porous electrode response by using TLMQ. I noticed two issues:
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gamma of the CPE element within is not bounded to <=1 by default; and
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The equation used for the model is stated as [Z = \sqrt{R_{ion}Z_{S}} \coth \sqrt{\frac{R_{ion}}{Z_{S}}] but it is missing pore length (l) within the coth function i.e. should be coth(l*sqrt(Rion/Zs)). I have confirmed this through Lasia's work and other papers.