The sum of currents can be coupled to other electrochemistry interfaces, calculating in as

where itot (SI unit: A/m2) is the sum of all electrode currents in the coupled Electrochemistry interface.

The electrode thickness, s, can typically be coupled to an External Depositing Electrode (External Corroding Electrode) node in the Electrodeposition, Moving Mesh (Corrosion, Moving Mesh) interface, in that case s is calculated as

where s0 is the initial electrode layer thickness, and Δstot is the electrode thickness change, calculated by the coupled Electrochemistry interface.

The electron conduction gives rise to a Joule heating source QH (SI unit: W/m2) according to