What is time constant in electrochemical impedance spectroscopy (EIS)? And how to define them from measured results?
Hi Emad S. Goda , please elaborate your experiment. For what you want to find time constant?
HI
I saw that someone had prior asked basically the same thing below and another answer was given at the time. Hope this helps.
Karthikeyan Rangasamy
- 12.16
- Gandhigram Rural Institute
How to calculate relaxation time from electrical impedance spectroscopy (EIS) technique?Question
- Asked May 15, 2017
can anyone suggest me how to calculate the relaxation time from electrical impedance spectra. is it possible calculate relaxation time by running in different frequencies or different temperature?
Maxim Sumets added an answer May 16, 2017
It depends on the representation of your impedance spectra and the frequency range. If you plot Im(Z) vs. omega graph and you have a maximum (not always of course observable), the maximum frequency corresponds a relaxation time (t=1/omega). There are another representation like Bode diagram where it can be derived from the break points. Try to find the following book comprehensive :"Impedance Spectroscopy" by J. Ross Macdonald. http://www.wiley.com/WileyCDA/WileyTitle/productCd-0471647497.html
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