About the editors RAVI VARMA is a member of the technical staff and project leader in the Materials Science and Technology Division at the Los Alamos National Laboratory. His current research interests are in ceramics processing, electrochemical corrosion, and waste remediation. As Senior Material Scientist at SRI International, he was responsible for results in areas of microwave-enhanced catalysis and diamond films. He contributed to battery development, metal and composite electro-deposition,and waste remediation technologies at Argonne National Laboratory. He has published several books and more than 100 research articles. He has several patents to his credit. J. R. SELMAN is Professor of Chemical Engineering at the Illinois Institute of Technology, Chicago. He has pursued a number of research interests, such as high temperature batteries, fuel cells performance, and electrodeposition of metals from fused salts. He has many publications, book chapters, and several patents to his credit.