Initial Values
Use this node to specify the Initial Values of the concentration, electrolyte potential and electric potential dependent variables to be used by the solver.
For many electrochemical problems that use nonlinear electrode kinetics, such as Butler–Volmer kinetics, providing reasonable initial values can significantly improve solver convergence.
A good value for the Electric potential (SI unit: V) in electrode and porous electrode domains can usually be derived from the boundary conditions. For instance, if a boundary has been grounded or set to a cell potential, use that value as the initial value also in the adjacent domain. For the Electrolyte potential (SI unit: V) a good initial value is often the negative of the equilibrium potential of the grounded electrode.
For the Concentration initial values, at least one positive and one negative charged species should have a nonzero and positive initial value (after considering the electroneutrality condition). The initial value for the ion calculated from the electroneutrality condition cannot be set explicitly.