Oxygen ion conductors for fuel cells and membranes: selected developments

authors	Marques, FMB; Kharton, VV; Naumovich, EN; Shaula, AL; Kovalevsky, AV; Yaremchenko, AA
nationality	International
journal	SOLID STATE IONICS
author keywords	oxygen ion conductors; apatites; mixed conductors; oxide composites
keywords	ELECTRICAL-PROPERTIES; ELECTRONIC TRANSPORT; OXIDE; CONDUCTIVITY; ELECTROLYTES; PEROVSKITES; COMPOSITES; SILICATES; ZIRCONIA; LAGAO3
abstract	Recent developments on single-phase and composite materials with oxygen ionic conductivity are briefly reviewed. Attention is focused on electrolytes with apatite-like structure, yttria-stabilized zirconia (YSZ) ceramics containing silica and apatite admixtures, and composite mixed conductors where chemical interaction of the components is large or severely constrained. The results show, in particular, a key role of phase interaction and microstructural design on materials performance. The ideas behind the adopted procedures can be extended to other systems and combinations of properties based on thermodynamic equilibria information. (c) 2006 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	0167-2738
year published	2006
volume	177
issue	19-25
beginning page	1697
ending page	1703
digital object identifier (doi)	10.1016/j.ssi.2006.04.036
web of science category	Chemistry, Physical; Physics, Condensed Matter
subject category	Chemistry; Physics
unique article identifier	WOS:000242555200029