For all solid state batteries (ASSB), the separator should be reassigned to the same material ID as the solid electrolyte using Model - ProcessGeo - Reassign Materials & IDs, and selecting the command Reassign Material ID from the ProcessGeo module. Void space in the solid state battery should be set as Inclusion as it is not taking part in the electrochemical reaction.

Since GeoDict 2025, the Charge Battery dialog automatically recognizes, that a solid electrolyte is chosen, when the chosen material is Solid and the Role in Battery Cell is set to Electrolyte under the Electrochemistry tab under the Constituent Materials tab.

For solid electrolytes, the buttons Edit Model and Edit Material (or View Model and View Material) under the Electrochemistry tab are not available, because these parameters are only needed for fluid electrolytes. The transference number is automatically set to 1 to resemble the ion conduction in solid electrolyte. Hence, the term of electron migration due to concentration differences in (119) is switched off. The only necessary parameter for the solid electrolyte is its effective ionic conductivity which can be seen in the tab Electrical Conductivity.

Enter the density under Solid Density tab instead of the Fluid Density /Viscosity tab.

Since a solid electrolyte cannot fill pores in the binder (or other conductive additives), any Model Parameters for conductive additives are ignored, and thus are grayed out. They will always be modeled without porosity.

Remember to click Edit Model when using a Lithium Reservoir as anode to adjust the Maximum Exchange Current Density between the lithium reservoir and the solid electrolyte, we recommend to use 320 A/m² for the interface between the lithium reservoir and the solid electrolyte LPSCl, see Fully Resolved and Singh et al., 2023.

If all parameters are set, click OK and Charge.