Ceria-based substrates for CO2 separation membranes
authors Patricio, SG; Soares, CMC; Santos, CFN; Figueiredo, FML; Marques, FMB
nationality International
journal SOLID STATE IONICS
author keywords Dual ionic conduction; Composites; Impedance spectroscopy; Microstructure; Ceria
keywords COMPOSITE ELECTROLYTES; DOPED CERIA; ELECTRICAL-CONDUCTIVITY; TRANSITION POINTS; FUEL-CELLS; CARBONATE
abstract Composites based on Gd-doped ceria and alkaline carbonates were produced in different manners to identify key compositional and microstructural features determining their mixed oxide and carbonate-ion conductivity. Co-firing of fine powder precursors yielded composites with delicate ceramic skeletons. After impregnation with alkaline carbonates, pre-sintered ceramic substrates produced from coarsened ceramic powders showed better densification and performance with respect to oxide-ion conduction. Microstructural analysis combined with low temperature impedance data obtained with ceramic substrates and composites confirmed the potential of impedance spectroscopy to infer on the oxide phase contribution to charge transport. (C) 2013 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0167-2738
year published 2014
volume 262
beginning page 248
ending page 252
digital object identifier (doi) 10.1016/j.ssi.2013.10.056
web of science category Chemistry, Physical; Physics, Condensed Matter
subject category Chemistry; Physics
unique article identifier WOS:000338810500055
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journal analysis (jcr 2017):
journal impact factor 2.751
5 year journal impact factor 2.607
category normalized journal impact factor percentile 58.483
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