I am able to fit the spectra with least chi square when I use CPE instead of capacitance.
Thanks Pablo...could have mailed you directly.. :)....So after fitting if we get a value of N= 0.55, is that acceptable even though it fit perfectly?. If not, what could be the criteria for fitting which actually represent the physical phenomena....
Thanks Christian ....I have estimated the double layer capacitance from CV where no redox processes are involved. Since my samples are porous I have R1(R2C2)(R3C3) where R2 I assumed to be the resistance for charge transfer processes and R3 as resistance of porous film. Since the spectra was not fitting properly using pure capacitance element I used CPE. So to compare with the double layer capacitance estimated form CV studies which component we should use. It is the total capacitance estimated or C2 or C3? Please clarify.
Dear Dr Christian,
As you said my system is porous which is active for electrochemical reaction. Thanks a lot for the info and I will look into the book chapter for a better correlation. Will get back to you soon.
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