Ⅳ. Electrochemical Measurements in Various Environments―Electrochemical Measurements in High Temperature Aqueous Solutions―

Abstract

In this article, introductory explanation for electrochemical measurements in high temperature aqueous solutions is presented. Although basics are common to normal electrochemistry at ambient temperatures, special attention is required to a reference electrode in an autoclave system because measured potential should be presented with respect to standard hydrogen electrode at given temperature. Two typical reference electrode systems, i.e. internal and external silver-silver chloride electrodes are explained in detail. Some examples of polarization measurements are also introduced.