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Intermediate-temperature nickel-yttria stabilized zirconia supported tubular solid oxide fuel cells using gadolinia-doped ceria electrolyte

Authors
Park, Seung-YoungNa, Chan WoongAhn, Jee HyunYun, Ui-JinLim, Tak-HyoungSong, Rak-HyunShin, Dong-RyulLee, Jong-Heun
Issue Date
15-11월-2012
Publisher
ELSEVIER
Keywords
Solid oxide fuel cells; Tubular solid oxide fuel cells; Gadolinia-doped ceria; Nickel-yttria stabilized zirconia; Carbonate coprecipitation
Citation
JOURNAL OF POWER SOURCES, v.218, pp.119 - 127
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POWER SOURCES
Volume
218
Start Page
119
End Page
127
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/106934
DOI
10.1016/j.jpowsour.2012.06.078
ISSN
0378-7753
Abstract
Gadolinia-doped ceria (GDC, Gd0.1Ce0.9O1.95) Powders with high sinterability are prepared by carbonate coprecipitation and applied in the fabrication of Ni-YSZ (yttria-stabilized zirconia)-supported tubular solid oxide fuel cells (SOFCs) with a cell configuration of Ni-YSZ/Ni/Ni-GDC/GDC/LSCF(La0.6Sr0.4Co0.2Fe0.8O3-delta)-GDC/LSCF. A high power density (594 mW cm(-2)) at 600 degrees C is achieved using the cell (diameter: 6 mm) prepared by sintering of the electrolyte at 1400 degrees C. This result is attributed to the dense electrolyte and good adherence between GDC and the electrode. The carbonate-derived GDC powders can be sintered to 97% of the theoretical density even at 1050 degrees C, which demonstrates that the fabrication temperature of tubular SOFCs can potentially be lowered by using cost-effective Ni-YSZ supports. (C) 2012 Elsevier B.V. All rights reserved.
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