Hard coded reaction rate and electrode charge transfer coefficients

[noelhallemans]

The reaction rate and electrode charge transfer coefficient parameters are hard coded in the exchange current density function (through the Butler-Volmer kinetics). I believe these are parameters that vary from battery to battery.

Wouldn't it make more sense to also consider these parameters in the parameter set? This would help for model parametrisation from impedance data as the reaction rate parameter could then represent the charge transfer resistance in a model where parameters are grouped.

[rtimms]

You can define them as Parameter objects inside the function, see this example

[vsree345]

What if we can create a config file and load that dynamically, so that we would not have to change the source code every time?
this is how the config.json would look like
{
"reaction_rate": 1.5e-5,
"charge_transfer_coefficient": 0.5
}

[rtimms]

Yes, you could do that by following the example linked above to set up the InputParameters and then handling in reading in the config and setting the values.