Synthesis and characterization of IT-electrolyte with perovskite structure La0.8Sr0.2Ga0.85Mg0.15O3-delta by glycine-nitrate combustion method

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	Synthesis and characterization of IT-electrolyte with perovskite structure La0.8Sr0.2Ga0.85Mg0.15O3-delta by glycine-nitrate combustion method
	L. G. Cong; T. M. He; Y. A. Ji; P. F. Guan; Y. L. Huang; W. H. Su
	2003
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	348 期号:1-2 页码:325-331
摘要	The intermediate-temperature electrolyte with perovskite-type La0.8Sr0.2Ga0.85Mg0.15O3-delta (LSGM) was synthesized using glycinenitrate combustion method. The formation process of the LSGM phase was investigated using DTA-TGA and XRD, and the thermal and electrical properties of the sintered samples were studied by thermal expansion and ac impedance technology. The research results show that the formation process of the LSGM phase suffered several different reaction stages. The perovskite phase was formed essentially at a sintering temperature of 1200 degreesC. The stable perovskite phase was formed completely after a sintering temperature of 1400 degreesC. The sinterability shows that the sintering temperature of the sample, which was synthesized by glycine-nitrate combustion method, is at least 100 degreesC lower than that of the conventional solid state method that was reported previously. The thermal expansion coefficient of the LSGM is somewhat higher than that of the YSZ. Impedance spectra indicate that the grain boundary resistance of the LSGM synthesized by glycine-nitrate combustion method is smaller. The conductivity of sample sintered at 1500 degreesC is higher than that at 1550 degreesC. The conductivity of a sample is 7.8X10(-2) S cm(-1) at 850 degreesC. The thermal analysis shows that the LSGM is relatively stable over an intermediate temperature range of 500-800 degreesC. (C) 2002 Elsevier Science B.V. All rights reserved.
部门归属	jilin univ, dept phys, changchun 130023, peoples r china. jilin univ, state key lab inorgan synth & preparat chem, changchun 130023, peoples r china. harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;he, tm (reprint author), jilin univ, dept phys, changchun 130023, peoples r china
关键词	Glycine-nitrate Combustion Method Solid Electrolyte Lanthanum Gallate Oxide Ion Conductivity Thermal Stability Doped Lanthanum Gallate Oxide-ion Conductor Electrical-properties Lagao3 Perovskite Fuel-cells Technology Stability Sr
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WOS记录号	WOS:000180153600051
引用统计	被引频次：180[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/321006/35804
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. G. Cong,T. M. He,Y. A. Ji,et al. Synthesis and characterization of IT-electrolyte with perovskite structure La0.8Sr0.2Ga0.85Mg0.15O3-delta by glycine-nitrate combustion method[J]. Journal of Alloys and Compounds,2003,348(1-2):325-331.
APA	L. G. Cong,T. M. He,Y. A. Ji,P. F. Guan,Y. L. Huang,&W. H. Su.(2003).Synthesis and characterization of IT-electrolyte with perovskite structure La0.8Sr0.2Ga0.85Mg0.15O3-delta by glycine-nitrate combustion method.Journal of Alloys and Compounds,348(1-2),325-331.
MLA	L. G. Cong,et al."Synthesis and characterization of IT-electrolyte with perovskite structure La0.8Sr0.2Ga0.85Mg0.15O3-delta by glycine-nitrate combustion method".Journal of Alloys and Compounds 348.1-2(2003):325-331.