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.

Subject
Materials, Electrochemical cells, Diffusion, Reference electrodes, Electrochemical reactions, Aqueous solutions, Potential measurements, Acidity, Constants, Electrodes, Electrolytes, Electrode potential, High temperature
Keywords:
electrochemical techniques, high temperature, aqueous solutions, reference electrodes, indicator electrodes, pH sensors, micro-electrophoresis, electrochemical noise, reference and buffer solutions
© 2004 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2004
Association for Materials Protection and Performance (AMPP)
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