The impedance of the porous cadmium electrode in alkali

Abstract

The porous cadmium electrode in alkali has been studied using the impedance technique applied to minielectrodes (area, 1 cm²) of conventional sintered structure. It is shown that in a wide frequency domain the electrode behaviour confirms to that of a filmed porous electrode under charge-transfer and diffusion control. In the lower frequency domain the electrode behaviour is more complicated and it is concluded that the frequency response was modified by intruding phase formation effects which were relaxed out at the higher frequencies.