Transport properties of solid oxide electrolyte ceramics: a brief review

authors	Kharton, VV; Marques, FMB; Atkinson, A
nationality	International
journal	SOLID STATE IONICS
author keywords	solid oxide electrolyte; ceramics; oxygen ionic conductivity; electronic conduction; thermal expansion
keywords	OXYGEN-ION CONDUCTIVITY; PEROVSKITE-TYPE OXIDE; FORMER SOVIET-UNION; CHEMICALLY-INDUCED STRESSES; DOPED LANTHANUM GALLATE; ELECTRICAL-CONDUCTIVITY; FUEL-CELLS; CRYSTAL-STRUCTURE; PROTONIC CONDUCTION; NANOCRYSTALLINE CERIA
abstract	This work is centered on the comparative analysis of oxygen ionic conductivity, electronic transport properties and thermal expansion of solid electrolyte ceramics, providing a brief overview of the materials having maximum potential performance in various high-temperature electrochemical devices, such as solid oxide fuel cells (SOFCs). Particular emphasis is focused on the oxygen ionic conductors reported during the last 10-15 years, including derivatives of gamma-Bi4V2O11 (BIMEVOX), La2Mo2O9 (LAMOX), Ln(10-x)Si(6)O(26)-based apatites, (Gd,Ca)(2)Ti2O7-delta pyrochlores and perovskite-related phases based on LaGaO3 and Ba2In2O5, in order to identify their specific features determining possible applications. The properties of the new ion-conducting phases are compared to data on well-known solid electrolytes, such as stabilized zirconia, delta-Bi2O3-based ceramics, doped ceria and LaAlO3. The compositions exhibiting highest ionic conductivity are briefly discussed. (C) 2004 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	0167-2738
year published	2004
volume	174
issue	1-4
beginning page	135
ending page	149
digital object identifier (doi)	10.1016/j.ssi.2004.06.015
web of science category	Chemistry, Physical; Physics, Condensed Matter
subject category	Chemistry; Physics
unique article identifier	WOS:000225919300020