Use the Electrode Surface Coupling node to define a combined wall and inflow/outflow boundary condition based on current densities of one or multiple Electrode Reaction nodes in an Electrochemistry interface.

The flow is proportional to the Molar mass (kg/mol) of the reacting species, the current densities and the stoichiometric coefficients according to Faraday’s law as defined by summation over the Reaction Coefficient subnodes.

This feature requires a specific license. For a detailed overview of the functionality available in each product visit https://www.comsol.com/products/specifications/.

Based on the number of species required for the model, use the Add () and Delete ) buttons under the table to add or remove Species. Then enter a value for the Molar mass (kg/mol) in the applicable rows for each species.