A study of (Ba0.5Sr0.5)(1-x)SmxCo0.8Fe0.2O3-delta as a cathode material for IT-SOFCs

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	A study of (Ba0.5Sr0.5)(1-x)SmxCo0.8Fe0.2O3-delta as a cathode material for IT-SOFCs
	S. Y. Li; Z. Lu; B. Wei; X. Q. Huang; J. P. Miao; G. Cao; R. B. Zhu; W. H. Su
	2006
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	426 期号:1-2 页码:408-414
摘要	(Ba0.5Sr0.5)(1-x)SmxCo0.8Fe0.2O3-delta (BSSCF; x = 0.05-0.15) compounds were synthesized with EDTA-Pechini method and characterized by powder X-ray diffraction (XRD), electrical conductivity and thermal expansion coefficient (TEC) measurements, as well as the electrochemical impedance spectra measurement. According to the XRD results, the main phase of the material belongs to the cubic perovskite-type, and the lattice contracting with the increasing contents of Sm3+. The TEC of the compounds is 19.1-20.3 x 10(-6) K-1 from 30 to 800 degrees C, which close to the values of Co-based materials, such as Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF). And the conductivity of BSSCF is higher than that of BSCF; e.g., about 212% higher at 500 degrees C for the x = 0.15 compound. Electrochemical impedance spectra at intermediate temperature revealed the better electrochemical performance of BSSCF than BSCF; e.g., the total resistance values of BSSCF electrode is 2.98 Omega cm(2) at 500 degrees C, nearly 50% lower than that of BSCF. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china. heilongjiang prov univ, harbin inst technol, key lab condensed matter sci & technol, harbin 150001, peoples r china. jilin univ, dept condensed matter phys, changchun 130023, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;li, sy (reprint author), harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china;lsy614@21cn.com suwenhui@hit.edu.cn
关键词	X-ray Diffraction Ionic Conduction Thermal Analysis Electronic Transport Electrochemical Reactions Oxide Fuel-cells Intermediate Temperature Sofcs Oxygen Permeation Electrical-properties Composite Cathodes Thermal-expansion Crystal-structure Ba0.5sr0.5co0.8fe0.2o3-delta Membranes Microstructure
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WOS记录号	WOS:000243085600072
引用统计	被引频次：63[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/321006/34311
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Li,Z. Lu,B. Wei,et al. A study of (Ba0.5Sr0.5)(1-x)SmxCo0.8Fe0.2O3-delta as a cathode material for IT-SOFCs[J]. Journal of Alloys and Compounds,2006,426(1-2):408-414.
APA	S. Y. Li.,Z. Lu.,B. Wei.,X. Q. Huang.,J. P. Miao.,...&W. H. Su.(2006).A study of (Ba0.5Sr0.5)(1-x)SmxCo0.8Fe0.2O3-delta as a cathode material for IT-SOFCs.Journal of Alloys and Compounds,426(1-2),408-414.
MLA	S. Y. Li,et al."A study of (Ba0.5Sr0.5)(1-x)SmxCo0.8Fe0.2O3-delta as a cathode material for IT-SOFCs".Journal of Alloys and Compounds 426.1-2(2006):408-414.