Cathodic reduction of hypochlorite anions during electrolysis of dilut
e solutions of NaCl can, according to Robertson, be decreased by placi
ng an inert separator with sufficiently small pores at the cathode sur
face. This causes a strong suppression of convection in the solution l
ayer at the cathode. The present work deals with the calculation of th
e flux of hypochlorite ions to the cathode for different thicknesses o
f the stagnant electrolyte layer at the cathode. The flux of ClO- ions
decreases with increasing current density and thickness of the stagna
nt layer. The migration effect causes a decrease of the Aux of ClO- io
ns to the cathode by up to 50%, relative to their diffusion flux. The
theoretical results are in good agreement with published experimental
data.