Thanks Vinh, I am not using modelling software, I am developing code myself, so I need a correlation or something like that for modelling proton passage through membrane.

Thanks

Hello Reza,

Hydrogen ion flux can be modeled with a mass transfer coefficient (k) through the membrane (where k = diffusion coefficient H+ / thickness) and the Fick's law. Other factors that influence are more complex to model.

However, if you are developing your own model (only for the polarization curve), you can assume this data as boundary conditions and use the Faraday's law and the membrane conductivity to make it easier.

Although it is not an electrolyzer, in this Website you can see a good scheme of the processes taking place in a PEMFC (page 15), that could help to define all the phenomena that occur during electrolysis:

http://www.h2fc-fair.com/hm10/images/pdf/fraunhofer03.pdf

Best regards

Thanks Ernesto for your clear and helpful words.