Structure, electrical and thermal properties of (Ba0.5Sr0.5)(1-x)GdxCo0.8Fe0.2O3-delta perovskite as a solid-oxide fuel cell cathode

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	Structure, electrical and thermal properties of (Ba0.5Sr0.5)(1-x)GdxCo0.8Fe0.2O3-delta perovskite as a solid-oxide fuel cell cathode
	Z. Q. Li; B. Wei; Z. Lu; X. Q. Huang; W. H. Su
	2012
发表期刊	Solid State Ionics
ISSN	0167-2738
卷号	207 页码:38-43
摘要	In order to develop cathode materials for intermediate temperature solid oxide fuel cell (IT-SOFC), (Ba0.5Sr0.5)(1-x)GdxCo0.8Fe0.2O3-delta (BSGCF: X = 0, 0.02, 0.05, 0.08, and 0.1) oxides were synthesized by sol-gel method. The effects of Gd-doping on the phase structure, thermal expansion coefficient (TEC), thermogravimetric (TG) and the electrical conductivity were investigated. All samples have cubic structure and the lattice shrinks with the increasing content of Gd3+. The TEC values of BSGCF are in the range of 20.7-22.4 x 10(-6) K-1 from 50 to 900 degrees C and the abnormal expansion phenomenon at the temperature range of 300-550 degrees C is observed in all these samples, which is related with the loss of lattice oxygen as proved by the TG result. The conductivity of BSGCF10 is three times as large as BSCF at 500 degrees C. While abnormal phenomenon of BSGCF for the x=0.05 is explained through the critical radius calculation. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[li, zhongqiu; wei, bo; lu, zhe; huang, xiqiang; su, wenhui] harbin inst technol, ctr condensed matter sci & technol, dept phys, harbin 150001, peoples r china. [li, zhongqiu] harbin normal univ, heilongjiang key lab low dimens syst mesoscop phy, sch phys & elect engn, harbin 150025, peoples r china. [su, wenhui] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;lu, z (reprint author), harbin inst technol, ctr condensed matter sci & technol, dept phys, harbin 150001, peoples r china.;lvzhe@hit.edu.cn
关键词	Thermal Expansion Coefficient Thermogravimetric Analysis Electrical Conductivity Critical Radius Doped Ba0.5sr0.5co0.8fe0.2o3-delta Electrochemical Properties Oxygen Permeation Performance Membranes La1-xsrxco1-yfeyo3 Conductivity Stability Oxidation Methane
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60086
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Li,B. Wei,Z. Lu,et al. Structure, electrical and thermal properties of (Ba0.5Sr0.5)(1-x)GdxCo0.8Fe0.2O3-delta perovskite as a solid-oxide fuel cell cathode[J]. Solid State Ionics,2012,207:38-43.
APA	Z. Q. Li,B. Wei,Z. Lu,X. Q. Huang,&W. H. Su.(2012).Structure, electrical and thermal properties of (Ba0.5Sr0.5)(1-x)GdxCo0.8Fe0.2O3-delta perovskite as a solid-oxide fuel cell cathode.Solid State Ionics,207,38-43.
MLA	Z. Q. Li,et al."Structure, electrical and thermal properties of (Ba0.5Sr0.5)(1-x)GdxCo0.8Fe0.2O3-delta perovskite as a solid-oxide fuel cell cathode".Solid State Ionics 207(2012):38-43.