Design and Characterization of Functionally Graded Cathode Materials For Solid Oxide Fuel Cells

被引:12
|
作者
Sadykov, V. [1 ,2 ]
Pavlova, S. [1 ]
Zarubina, V. [1 ,2 ]
Bobin, A. [1 ,2 ]
Alikina, G. [1 ]
Lukashevich, A. [1 ]
Muzykantov, V. [1 ]
Usoltsev, V. [1 ]
Kharlamova, T. [1 ]
Boronin, A. [1 ,2 ]
Koscheev, S. [1 ]
Krieger, T. [1 ]
Ishchenko, A. [1 ]
Mezentseva, N. [1 ]
Salanov, A. [1 ]
Smirnova, A. [3 ]
Bobrenok, O. [5 ]
Uvarov, N. [4 ]
机构
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Univ Connecticut, Dept Chem, Connecticut Global Fuel Cell Ctr, Mat & Biomol Engn, Storrs, CT 06269 USA
[4] Inst Solid State Chem & Mech Activat SB RAS Novos, Novosibirsk 630058, Russia
[5] Inst Thermophys SB RAS, Novosibirsk 630090, Russia
来源
SOLID OXIDE FUEL CELLS 11 (SOFC-XI) | 2009年 / 25卷 / 02期
关键词
D O I
10.1149/1.3205794
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
This work presents results on synthesis and characterization of mixed ionic-electronic conducting nanocomposite cathode materials for Intermediate Temperature Solid Oxide Fuel Cells. The corresponding materials are comprised of La0.8Sr0.2MnO3 (LSM) or La0.8Sr0.2Fe1-xNixO3-delta (x= 0.1-0.4) (LSFNx) perovskites and Sc0.1Ce0.01Zr0.89O2-x (ScCeSZ) or Ce0.9Gd0.1O2-delta (GDC) fluorites mixed via powerful ultrasonic dispersion of powders in isopropanol. Genesis of their structural properties was studied in detail by transmission electron microscopy with elemental analysis and X-ray diffraction; surface features were characterized by X-ray Photoelectron Spectroscopy. Perovskite-fluorite nanodomain interfaces appear to provide a path for fast oxygen diffusion as revealed by the oxygen isotope exchange and temperature-programmed desorption. Testing in wet H-2/air for button-size fuel cells with thin Y-doped zirconia layer and nanocomposite functionally graded cathodes demonstrated promising and stable performance in some combinations in the intermediate temperature range.
引用
收藏
页码:2403 / 2412
页数:10
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