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
	2010
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	35 期号:8 页码:3775-3782
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.
部门归属	[wei, bo; jia, dechang] harbin inst technol, sch mat sci & engn, inst adv ceram, harbin 150080, peoples r china. [wei, bo; lue, zhe; huang, xiqiang; zhang, yaohui; su, wenhui] harbin inst technol, dept phys, ctr condensed matter sci & technol, harbin 150080, peoples r china. [su, wenhui] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wei, b (reprint author), harbin inst technol, sch mat sci & engn, inst adv ceram, harbin 150080, peoples r china;bowei@hit.edu.cn
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
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WOS记录号	WOS:000277463600068
引用统计	被引频次：55[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31568
专题	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.