Hi, I use Matlab for Impedance simulation. How you describe other elements of impedance? Do you use your script or one from the internet?

I wrote like that: z=1./(p(1)*sqrt(1j*2*pi*freq)). We can discuss more about simulations, I am very interested in this topic.

This Warburg element has an impedance that inversely proportional to the square root of the frequency. That is what makes it difficult to figure out its implementation.

The element is the part of the electrical equivalent circuit of a PEM fuel cell that I am trying to simulate. The following links will give an idea about the response of this element:

http://en.wikipedia.org/wiki/Warburg_element

http://www.consultrsr.com/resources/eis/diffusion.htm

Thanks

Yes, I know Warburg element, thank you for the links. Formula to create function is z=1./(p(1)*sqrt(1j*2*pi*freq)). I use it in Matlab for warburg simulation. Additional elements for equivalent circuit I also have, but it is better to use Zfit function, and add some functions what you need.

Dear Inga M-V

which frequency range do you use to simulate Warburg impedance with this formula?