Abstract
High temperature aqueous solutions represent new frontiers in electrochemical studies that are both technically challenging and technologically important 1. The interest in the high temperature aqueous electrochemistry has significantly increased in the last 30 years and this interest has risen mainly because of the many technological processes that take place in high temperature aqueous environment. However, it is still difficult to routinely carry out the high temperature electrochemical studies because few well-established electrochemical systems are available. The electrochemical techniques for high temperature aqueous systems recently developed by the author’s research group at Penn State University (PSU) are reviewed in this paper. Particularly, high temperature potentiometry and pH measurements of aqueous electrolytes, high temperature microelectrophoresis studies of the metal oxide/water interfaces, and high temperature electrochemical noise measurements are addressed in this paper.