Use the Thin Electrode Surface node to define electrode reactions occurring on a thin electrode, fully immersed in electrolyte. The electrode is assumed to be infinitely thin, and is only applicable to interior boundaries of electrolyte domains.

The functionality of the node is similar to the Electrode Surface node. Use the Side selection setting to define if the electrode reactions, defined by the Electrode Reaction subnodes, are to be defined Both sides of the electrode, or on the Up or Down side only.

Upon application of the node, the electrolyte-potential dependent-variable degree of freedom is defined as a “slit” with different values on each side on the selected boundaries. Additional variables defined by the node depending on the electrolyte potential, also having different values on each side of the interior boundary, are named using additional u or d suffixes, indicating to which side (up or down) they apply.