Abstract
Praseodymium cerium oxide (Pr x Ce1 − xO2 − δ) is a mixed ionic-electronic conductor with high levels of nonstoichiometry under oxidizing conditions resulting from reduction of Pr4 + to Pr3 +. Coulometric titration measurements performed on (Pr x Ce1 − xO2 − δ) with x = 0.2 are generally consistent with those derived from electrical conductivity measurements. Nevertheless, a somewhat larger degree of nonstoichiometry measured via coulometric titration implies that non-charged defect species may be significant in the system.
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References
H.L. Tuller and A.S. Nowick, Journal of the Electrochemical Society, 122, 255 (1975).
M. Mogensen, N.M. Sammes, and G.A. Tompsett, Solid State Ionics, 129, 63 (2000).
T.S. Stefanik and H.L. Tuller, in Materials Research Society Symposium Proceedings: Solid State Ionics—2002, edited by P. Knauth, J.-M. Tarascon, E. Traversa, H.L. Tuller, (Materials Research Society, PA Warrendale, 2002), vol. 756, p. 163.
D.Schneider, M.Godickemeier, L.J.Gauckler, Journal of Electroceramics, 1, 165, (1997).
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Stefanik, T.S., Tuller, H.L. Nonstoichiometry and Defect Chemistry in Praseodymium-Cerium Oxide. J Electroceram 13, 799–803 (2004). https://doi.org/10.1007/s10832-004-5195-7
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DOI: https://doi.org/10.1007/s10832-004-5195-7