Thermal and electrical properties of new cathode material Ba0.5Sr0.5Co0.8Fe0.2O3-δ for solid oxide fuel cells

被引：146

作者：

Wei, B ^{[1
]}

Lü, Z

Li, SY

Liu, YQ

Liu, KY

Su, WH

机构：

[1] Hei Long Jian Provincial Univ, Harbin Inst Technol, Ctr Condensed Matter Sci & Technol, Harbin 150001, Peoples R China

[2] Hei Long Jian Provincial Univ, Harbin Inst Technol, Key Lab Condensed Matter Sci & Technol, Harbin 150001, Peoples R China

[3] Jilin Univ, Dept Condensed Matter Phys, Changchun 130023, Peoples R China

[4] Acad Sinica, Int Ctr Mat Phys, Changchun 110015, Peoples R China

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2005年 / 8卷 / 08期

关键词：

D O I：

10.1149/1.1951232

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A newly developed cathode material, Ba0.5Sr0.5Co0.8Fe0.2O3-delta, was synthesized and characterized. X-ray diffraction results identified it as a cubic perovskite structure. Thermogravimetric results showed that lattice oxygen loss was about 2% in weight between 50 and 1000 degrees C. Thermal expansion coefficient results in air and argon were extraordinarily high, with slope changes occurring at about 382 and 360 degrees C, respectively. Electrical conductivity values were sufficient for cathode application with the maximum of about 28.1 S cm(-1) at 500 degrees C in air and 17.3 S cm(-1) at 900 degrees C in N-2, correspondingly. Both thermal and electrical properties were closely associated with lattice oxygen behaviors and oxygen partial pressure. (c) 2005 The Electrochemical Society.

引用

页码：A428 / A431

页数：4