Use the Additional Porous Electrode Material node to define an additional porous electrode material in a porous electrode, for instance to solve for an additional intercalation concentration in the solid phase of the electrode particles. The feature can only be applied to domains that contain an active Porous Electrode node. A Porous Electrode Reaction node is added by default.

You specify the reactions occurring on the additional material, giving rise to fluxes in and out from the electrode particles, using Porous Electrode Reaction subnodes, which is available from the context menu (right-click the parent node) or from the Physics toolbar, Attributes menu. Also add a Porous Matrix Double Layer Capacitance and, for the Battery with Binary Electrolyte interface, a Porous Matrix Adsorption/Desorption Reaction subnode.

See the Porous Electrode for more information about the settings of this node.