This volume deals with the science and technology of solid state ionics. Several topics, including theoretical models, polymers, glasses, proton conductors, oxide and other amion conductors, experimental techniques, fuel cells, batteries, sensors and electrochromic displays, are discussed. Some of the highlights of the book are the working theory of ion transport in glasses and polymers, new proton-conducting polymers for fixed cells, nanostructure materials for batteries, etc.