Thin Gas Diffusion Electrode
Use the Thin H2 Gas Diffusion Electrode or the Thin O2 Gas Diffusion Electrode nodes to define a thin gas diffusion electrode located at a boundary between an Electrolyte Phase, an Electronic Conducting Phase and a Gas Phase node.
The electrode is assumed to be so thin that any current and species distribution effects along the electrode thickness can be neglected.
The volumetric current density and corresponding mass sources/fluxes of the Thin Gas Diffusion Electrode Reaction subnodes are multiplied by the Electrode Thickness parameter, and applied as a boundary conditions.
Film Resistance
Use a film resistance if you want to include an additional potential drop due to an ohmic resistance at the interface between the electrode and the electrolyte (a contact resistance), for instance due to build-up of insulating deposits.
Specify either a Surface resistance Rfilm (SI unit: Ω·m2) directly or choose the Thickness and conductivity option to calculate the surface resistivity based on a depositing film thickness.