I use COMSOL Multiphysics and Digielch. But both are paid. There is a book about "Simulating electrochemical processes using Mathematica". You can use it in the software Maxima.

Dear Sabiar, despite I am not acquainted with simulations in electrochemistry, I have a friend, Dr. Oliver Rodriguez that developed an open-source simulator based on Python. Since it is free and promptly available you can check it out to learn whether it may be useful for you or not. You can find it at the following link:

https://oliverrdz.xyz/soft-potato/

Hi, Sabiar Rahaman. Soft Potato can simulate cyclic voltammetry and chronoamperometry at macroelectrodes (planar diffusion) of E mechanisms. It is written in Python and open source, I made a page here in RG, in case you are interested:

https://www.researchgate.net/project/Soft-Potato-an-open-source-electrochemistry-simulator

for more info, visit my webpage:

https://oliverrdz.xyz/soft-potato/

I hope it helps!

PS. Thank you, Dra. Cybelle Oliveira Soares for the contact!

Dear Oliver Rodriguez, Thank you for sharing the valuable information. I have gone through your webpage, and it's conducive.

Dear Sabiar Rahaman i recommended "Origin Lab"