Sr0.75Y0.25Co0.5Mn0.5O3-y Perovskite Cathode for Solid Oxide Fuel Cells

被引：14

作者：

Burmistrov, Ilya ^{[1
]}

Drozhzhin, Oleg A. ^{[2
]}

Istomin, Sergey Ya. ^{[2
]}

Sinitsyn, Vitaly V. ^{[1
]}

Antipov, Eugeny V. ^{[2
]}

Bredikhin, Sergey I. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow, Russia

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2009年 / 156卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

THERMAL-EXPANSION; ELECTRICAL-CONDUCTIVITY; SOFC; ND; ELECTROLYTE; COMPONENTS; CERAMICS; OXYGEN; FE;

D O I：

10.1149/1.3184152

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The Sr(0.75)Y(0.25)Co(0.5)Mn(0.5)O(3-y) (SYCM) oxide with a cubic perovskite structure was examined as a promising cathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). The electrical conductivity, thermal expansion coefficient (TEC), and reactivity with gadolinia-doped ceria (GDC) or yttria-stabilized zirconia (YSZ) were studied. Reflections from SrZrO(3) (similar to 6 wt %) after beat-treatment of the SYCM:YSZ mixture at 900 degrees C for 48 h and no reaction after heat-treatment with GDC were observed. In the low and intermediate temperature region (473-873 K), the TEC value is 13.3 ppm K(-1) and most closely matches the common IT-SOFC electrolyte material GDC but the TEC value increases to 19.6 ppm K(-1) at 873-1073 K. The investigations of the electrochemical properties of the model SOFCs at 900 degrees C with the SYCM cathode show that substituting the SYCM cathode for the standard (La,Sr)MnO(3) cathode improves the cell performance. (C) 2009 The Electrochemical Society. (DOI: 10.1149/1.3184152] All rights reserved.

引用

页码：B1212 / B1217

页数：6

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