Sodium-ion / Doyle-Fuller-Newman model

The sodium ion model is the same as the lithium ion PXD model, but you have the option to select a slightly adapted Butler-Volmer equation proposed by Chayambuka et al.:

Select this option in your model settings:

model_settings = load_model_settings(;from_file_path = "file_path.json")
model_settings["ButlerVolmer"] = "Chayambuka"

Butler-Volmer equation

Here is the charge transfer coefficient, is the charge transfer overpotential, is the electrode surface concentration of sodium, is the average particle concentration, the solid saturation concentration, , the electrolyte concentration, and the average sodium concentration in the electrolyte. The exchange current density can be expressed as:

where is the reaction rate constant.