THE THEORY OF THE AC VOLTAMMETRY OF REVERSIBLE ELECTRODE PROCESSES AT TUBULAR ELECTRODES

A theory describing the alternating current response to an ac potential superimposed on a de potential is described for reversible electrode reactions at both tubular and channel electrodes. Al high frequencies the current is phase shifted through π 4 as predicted by the classical Warburg impedance expression. At lower frequencies the effect of convection causes the phase shift to fall below π 4. © 1983