[yc9316]

Hi, I am working on SOFC model modelling by Fluent 12.1.4 with fuelcell module, I have a question about the active current density modified by Butler-Volmer equation such as:
but there is no number of electron participating in, the general simplified form of Butler-Volmer equation should be expressed as:

don't care about the exchange current i0 and other parameters, there should be a "n" represent the number of electrons as shown in the 2rd equaiton, but in fuelcell model, there is not such an iterm. I am not sure that be right and look forward to your help.

Regards
Chao