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

Title
Cobalt oxide co-doping effect on the sinterability and electrical conductivity of nano-crystalline Gd-doped ceria
Authors
다사리하리박선영지호일김혜령손지원김병국이해원이종호
Keywords
SOFC; CeO2; Sintering; Electrical conductivity; Powders; chemical preparation; Fuel cells
Issue Date
2012-01
Publisher
Ceramics international
Citation
VOL 38S, NO S1, 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 ℃. 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 ℃ in air.
URI
http://pubs.kist.re.kr/handle/201004/41423
ISSN
0272-8842
Appears in Collections:
KIST Publication > Article
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