Thermal expansion and electrochemical properties of Ni-doped GdBaCo(2)O(5+delta) double-perovskite type oxides

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	Thermal expansion and electrochemical properties of Ni-doped GdBaCo(2)O(5+delta) double-perovskite type oxides
	B. Wei ; Z. Lu ; D. C. Jia ; X. Q. Huang ; Y. H. Zhang ; W. H. Su
刊名	International Journal of Hydrogen Energy
	2010
卷号	35 期号:8 页码:3775-3782
关键词	Solid oxide fuel cells Ni-doped GdBaCo(2)O(5+delta) Cathodes Thermal expansion Electrochemical impedance spectra fuel-cells composite cathodes electrical-conductivity oxygen reduction it-sofc performance fe lnbaco(2)o(5+delta) diffusion kinetics
ISSN号	0360-3199
中文摘要	Layered GdBaCo(2-x)Ni(x)O(5+delta) (0 <= x <= 0.3) complex oxides were synthesized and investigated as cathodes for intermediate-temperature solid oxide fuel cell (IT-SOFCs). All compositions formed an orthorhombic double-perovskite structure after calcination at 1000 degrees C for 5 h. The thermal expansion coefficient (TEC) was effectively decreased due to the partial substitution of Ni for Co, but the cathodic polarization resistance slightly increased with the increasing Ni content. Among the tested oxides, the GdBaCo(1.7)Ni(0.3)O(5+delta) composition showed a fairly reduced TEC (15.5 x 10(-6) K(-1)) and reasonably low polarization resistances (e.g., 0.54 Omega cm(2) at 600 degrees C), which was considered as a promising candidate for IT-SOFCs. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
原文出处	://WOS:000277463600068
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31568]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Wei,Z. Lu,D. C. Jia,et al. Thermal expansion and electrochemical properties of Ni-doped GdBaCo(2)O(5+delta) double-perovskite type oxides[J]. International Journal of Hydrogen Energy,2010,35(8):3775-3782.
APA	B. Wei,Z. Lu,D. C. Jia,X. Q. Huang,Y. H. Zhang,&W. H. Su.(2010).Thermal expansion and electrochemical properties of Ni-doped GdBaCo(2)O(5+delta) double-perovskite type oxides.International Journal of Hydrogen Energy,35(8),3775-3782.
MLA	B. Wei,et al."Thermal expansion and electrochemical properties of Ni-doped GdBaCo(2)O(5+delta) double-perovskite type oxides".International Journal of Hydrogen Energy 35.8(2010):3775-3782.