Investigation on the properties of Nb and Al doped Ti3SiC2 as a new interconnect material for IT-SOFC

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	Investigation on the properties of Nb and Al doped Ti3SiC2 as a new interconnect material for IT-SOFC
	L. L. Zheng; J. J. Li; M. S. Li; Y. C. Zhou
	2012
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	37 期号:1 页码:1084-1088
摘要	A modified layered ternary compound (Ti0.98Nb0.02)(3)(Si0.95Al0.05)C-2 was evaluated as a new interconnect material for intermediate temperature solid oxide fuel cells (IT-SOFC). The results indicated that the compound has low density (4.50 g/cm(3)), closer matched thermal expansion coefficient with Y2O3 stabled ZrO2 (9.0 x 10(-6)/K), low room temperature electrical resistivity (24 mu Omega cm), and good mechanical properties and machinability. During the isothermal oxidation at 600 degrees C-800 degrees C, a monolithic layer with the mixture of rutile TiO2 and amorphous SiO2 formed on (Ti0.98Nb0.02)(3)(Si0.95Al0.05)C-2. Its oxidation kinetics roughly follows a parabolic law, the rate constant is 0.45, 1.26, 1.57 x 10(-7) mg(2)/cm(4) s at 600 degrees C, 700 degrees C, 800 degrees C, respectively. After the oxidation at 700 degrees C and 800 degrees C in air for 100 h, its area special resistance is 5 and 12 m Omega cm(2) at the corresponding oxidation temperature, respectively. In oxidizing environment, (Ti0.98Nb0.02)(3)(Si(0.95)A(10.05))C-2 is very stable, and has not Cr or other element volatilization. All above determined properties of (Ti0.98Nb0.02)3 (Si0.95Al0.05)C-2 are favorable for its application as interconnect in IT-SOFC. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
部门归属	[zheng, l. l.; li, j. j.; li, m. s.; zhou, y. c.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zheng, l. l.; li, j. j.] chinese acad sci, grad sch, beijing 100039, peoples r china.;li, ms (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;mshli@imr.ac.cn
关键词	Max Phase Interconnect Sofc Oxidation Area Specific Resistance Oxide Fuel-cells Alloy Interconnects Air
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60499
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. L. Zheng,J. J. Li,M. S. Li,et al. Investigation on the properties of Nb and Al doped Ti3SiC2 as a new interconnect material for IT-SOFC[J]. International Journal of Hydrogen Energy,2012,37(1):1084-1088.
APA	L. L. Zheng,J. J. Li,M. S. Li,&Y. C. Zhou.(2012).Investigation on the properties of Nb and Al doped Ti3SiC2 as a new interconnect material for IT-SOFC.International Journal of Hydrogen Energy,37(1),1084-1088.
MLA	L. L. Zheng,et al."Investigation on the properties of Nb and Al doped Ti3SiC2 as a new interconnect material for IT-SOFC".International Journal of Hydrogen Energy 37.1(2012):1084-1088.