Double layer structure at the limiting current

Apparent anomalies in charge and field distributions in the diffusion layer and the diffuse double layer at the limiting current are resolved by means of two matching expansions valid in the two regions. The region of appreciable deviation from electroneutrality is thicker, and in this region the electric field is expected to be smaller, than at currents below the limiting current. Modified zeta potentials are calculated for a cation-discharge reaction.