Note

This notebook is already available in your BattMo installation. In Matlab, run

open runImpedanceExplorer

Exploring interactively the impact of the P2D parameters on EIS output

We load the raw BattMo JSON parameter files for chemistry (Chen2020) and geometry.

jsonstruct_material = parseBattmoJson(fullfile('ParameterData','ParameterSets','Chen2020','chen2020_lithium_ion_battery.json'));
jsonstruct_geometry = parseBattmoJson(fullfile('Examples', 'JsonDataFiles', 'geometryChen.json'));

Merging the chemistry and geometry JSON structures into a unified configuration.

jsonstruct = mergeStructs({jsonstruct_material, jsonstruct_geometry});

Enabling and configuring the double layer capacitance on the negative electrode interface. By default, the raw Chen2020 dataset does not enable the double-layer capacitance. We must set useDoubleLayerCapacity to true so the solver registers the parameter.

ne  = 'NegativeElectrode';
co  = 'Coating';
am  = 'ActiveMaterial';
itf = 'Interface';


includeDoubleLayer = true;


if includeDoubleLayer
    jsonstruct.(ne).(co).(am).(itf).useDoubleLayerCapacity = true;
    jsonstruct.(ne).(co).(am).(itf).doubleLayerCapacitance = 0.2; % F/m^2
end

Instantiating the Impedance Explorer application handle with our custom JSON structure.

impexp = ImpedanceExplorer(jsonstruct);

Cleaning up the MATLAB workspace by closing any previously opened UI figures.

erase_previous_figure = true;
if erase_previous_figure
    delete(findall(0, 'Type', 'Figure'));
end

We can dynamically override the parameters. Here, as an example, we change the first parameter.

change_a_parameter = true;
if change_a_parameter
    impexp.parameters{1} = {'PositiveElectrode', 'Coating', 'ActiveMaterial', 'Interface', 'volumetricSurfaceArea'};
end

Launching the interactive graphical user interface.

impexp.start();