Investigating Parameter Adjustments for Observing Degradation Effects in PyBaMM

PyBaMM Q&A Parameters
1

Hi everyone!

I’m using PyBaMM to study the impact of a fixed charging strategy under long-term degradation. From my understanding, degradation increases the interfacial resistance, which should lead to higher voltage and temperature. However, the effects I observe are not very pronounced. My current settings are as follows:

    options = {
        "thermal": "lumped",
        "SEI": "solvent-diffusion limited",
        "lithium plating": "irreversible",
    }
    self.param.update(
        {
             "Outer SEI solvent diffusivity [m2.s-1]": 2.5e-22,
             "Lithium plating kinetic rate constant [m.s-1]": 1e-11
        }
    )

I would like to ask whether I should try increasing the outer SEI solvent diffusivity, or if there are other parameters that would be more effective to modify.

Thank you very much for your advice!