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J. Hastie, “High Temperature Vapors. Science and Technology”, Academic Press, New York, 1975,

Chapter 3

See also: Contributions presented in “High temperature metal halide chemistry” edited by D.L.Hildenbrand and D. Cubicciotti, Proc.Vol. 78-1 The Electrochemical Society, 1978 Z. Toth, “Chemistry of material science phenomena in high intensity discharge light sources”, plenary lecture presented at the 12th International IUPAC-Conference on High Temperature Materials Chemistry-HTMC XII, held in Vienna September 17-22, 2006; published in Pure and Applied Chemistry, Vol. 79, n.10, p. 1771, 2007.

9.5 Electrochemical systems at high temperature and applications of solid state electrolytes

Aim: to give an overview of the basic physical chemistry of materials properties and processes in action in these electrochemical devices.

Topic description and teaching suggestions: Solid state electrochemical devices are widely used in the measurement of thermodynamic properties of metallic and ceramic materials at high temperature (see the description of the preceding topic dealing with experimental thermodynamics, section 5.2) and as high temperature sensors. Examples of materials typically involved in thermodynamic measurements are yttria-calcia stabilized zirconia, CaF2 single crystals, etc. Solid state electrochemical sensors can be used at temperatures up to 700°C with high sensitivity and response stability to improve combustion control, resulting in both improved fuel utilization and reduced emissions. Among the energy systems solid oxide fuel cell (SOFC) and molten carbonate fuel cell (MCFC) configurations involve high temperature materials and processes. The

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