Thermal, electrical, and electrochemical properties of Nd-doped Ba0.5Sr0.5Co0.8Fe0.2O3-delta as a cathode material for SOFC

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	Thermal, electrical, and electrochemical properties of Nd-doped Ba0.5Sr0.5Co0.8Fe0.2O3-delta as a cathode material for SOFC
	S. Y. Li; Z. Lu; X. Q. Huang; W. H. Su
	2008
发表期刊	Solid State Ionics
ISSN	0167-2738
卷号	178 期号:35-36 页码:1853-1858
摘要	Crystal structure, thermal expansion coefficient (TEC), electrical conductivity and AC-impedance of (Ba0.5Sr0.5) 1_xNdCo0.8Fe0.2O3-delta (BSNCF; 0.10 <= x <= 0.20) were studied in relation to their potential use as intermediate temperature solid oxide fuel cell (IT-SOFC) cathode. An emphasis is made on the effect of Nd-doping on these properties. A single cubic pervoskite were observed in the X-ray diffraction (XRD) measurement. The TEC of BSNCF values were 18.7-19.7 x 10(-6) K-1 from 30 to 800 degrees C. The electrical conductivity, which is the main defect of Ba0.5Sr0.5 Co0.8Fe0.2O3-delta (BSCF), was improved by Nd-doping, e.g. the compound of x=0.20 demonstrated a conductivity of sigma= 130 S.cm(-1) at 392 degrees C. The AC-impedance analyses were carried out on an electrolyte supported BSNCF/ Sm0.2Ce0.8O1.9 (SDC)/Ag half-cell and a BSCF/SDC/ Ag half-cell. The BSNCF cathode revealed lower polarization resistance than BSCF, e.g. at 500 degrees C, the values for the x=0.20 sample and BSCF were 1.79 Omega cm(2) and 4.52 Omega cm(2), respectively. (C) 2007 Elsevier B.V All rights reserved.
部门归属	[li, shuyan; lue, zhe; huang, xiqiang; su, wenhui] harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china. [li, shuyan; lue, zhe; huang, xiqiang; su, wenhui] heilongjiang prov univ, harbin inst technol, key lab condensed matter sci & technol, harbin 150001, peoples r china. [su, wenhui] jilin univ, dept condensed matter phys, changchun 130023, peoples r china. [su, wenhui] 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;lishuyan614hit@yahoo.com.cn suwenhui@hit.edu.cn
关键词	Sofc Perovskite Sm0.2ce0.8o1.9 Cathode Material Ac-impedance Oxide Fuel-cells Crystal-structure Performance Evaluation Stabilized Zirconia Perovskite Oxide It-sofcs Conductivity Expansion La1-xsrxco1-yfeyo3 Electrode
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WOS记录号	WOS:000254448200010
引用统计	被引频次：76[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/321006/32893
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,X. Q. Huang,et al. Thermal, electrical, and electrochemical properties of Nd-doped Ba0.5Sr0.5Co0.8Fe0.2O3-delta as a cathode material for SOFC[J]. Solid State Ionics,2008,178(35-36):1853-1858.
APA	S. Y. Li,Z. Lu,X. Q. Huang,&W. H. Su.(2008).Thermal, electrical, and electrochemical properties of Nd-doped Ba0.5Sr0.5Co0.8Fe0.2O3-delta as a cathode material for SOFC.Solid State Ionics,178(35-36),1853-1858.
MLA	S. Y. Li,et al."Thermal, electrical, and electrochemical properties of Nd-doped Ba0.5Sr0.5Co0.8Fe0.2O3-delta as a cathode material for SOFC".Solid State Ionics 178.35-36(2008):1853-1858.