Figure 3.
The diagram shows three sections representing the positive electrode, separator, and negative electrode. It illustrates boundary conditions for lithium-ion concentration and for solid and electrolyte potentials. The upper section shows effective diffusion terms for lithium-ion concentration being zero at both ends. The middle section represents solid potential equations where negative effective conductivity multiplied by potential gradient equals applied current on the left side and equals zero at internal boundaries. The lower section shows electrolyte potential equations where the product of effective conductivity and potential gradient equals zero at both ends. The boundaries indicate that lithium ion concentration, solid potential, and electrolyte potential are continuous across electrode and separator interfaces.Schematic representation of the boundary conditions for the lithium-ion concentration within the electrolyte and for the solid and electrolyte potential