Influence of solid phase conductivity on spatial localization of electrochemical processes in flow-through porous electrodes Part II: Nonuniform porous matrix with a variable conductivity profile

The possibilities of improving the current distribution uniformity of the main reaction and of increasing porous electrode (PE) performance efficiency by using a porous matrix with a definite profile of conductivity s(x) have been theoretically analysed. A more general deduction of an equation for the s(x) profile providing the electrode with constant polarization is given. Peculiarities of this profile and ways of its approximate realization are discussed. The possibility of significant increase in the performance efficiency of electrodes of this type has been experimentally confirmed.