A Study of Polarization Capacity and Electrode Condition

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Abstract
In order to determine the relative effects of electrode condition, electrolyte and a number of physical parameters on electrolytic capacity, the capacity‐frequency characteristics of a single cell, kept under carefully controlled conditions, were measured for a period of about six months. Some conclusions to be drawn are: (1) While the magnitude of the capacity can be varied over a wide range by change in electrode condition, the general shape of the capacity frequency characteristic is determined mostly by the concentration of the active ion in the electrolyte. (2) The capacity can be decreased greatly by exposing the electrodes to catalytic poisons such as H2S and CO and can be subsequently increased by exposure to either electrolytic oxygen or hydrogen. These effects can be alternated. (3) The capacity is less subject to variations at the higher than the lower frequencies.

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