Cobalt oxide co-doping effect on the sinterability and electrical conductivity of nano-crystalline Gd-doped ceria

Authors
Prasad, D. HariPark, S. Y.Ji, H.Kim, H. -R.Son, J. -W.Kim, B. -K.Lee, H. -W.Lee, J. -H.
Issue Date
2012-01
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.38, pp.S497 - S500
Abstract
Nano-crystalline 3 mol% CoO-doped GDC (Ce0.9Gd0.1O1.95) powders of high sinterability at lower sintering temperature have been synthesized by deposition-precipitation method. The physical and chemical properties of the obtained powders were characterized by XRD, XPS, BET, EDS and TEM. From sintering studies, CoO-doped GDC can be fully densified (97% relative density) at a lower temperature of 850 degrees C. It has also been found that the sintered samples have a higher ionic conductivity of 2.38 x 10(-2) S cm(-1) at 600 degrees C in air. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Keywords
GRAIN-GROWTH; MICROSTRUCTURE; POWDERS; GRAIN-GROWTH; MICROSTRUCTURE; POWDERS; Powders: chemical preparation; Electrical conductivity; CeO2; Fuel cells
ISSN
0272-8842
URI
https://pubs.kist.re.kr/handle/201004/129685
DOI
10.1016/j.ceramint.2011.05.062
Appears in Collections:
KIST Article > 2012
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