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Citation: LEI Ze, ZHU Qing-Shan. Solution Combustion Synthesis and Characterization of Nanocrystalline La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode Powders[J]. Acta Physico-Chimica Sinica, ;2007, 23(02): 232-236. doi: 10.3866/PKU.WHXB20070218 shu

Solution Combustion Synthesis and Characterization of Nanocrystalline La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode Powders

LEI Ze ,
ZHU Qing-Shan

1.
Key Laboratory of Multiphase Reactions, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China;Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Received Date: 14 July 2006
Available Online: 30 January 2007

La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) precursor powder was prepared by a nitrate-glycine solution combustion method. The properties of LSCF powder were characterized by XRD, BET, FESEM, and dynamic laser scattering (DLS) method. The results showed that LSCF powder was in the perovskite structure with a specific surface area of 22.9 m2·g-1 and an average particle size of 175 nm. The results of non-isothermal sintering tests suggested that LSCF powder possessed od low-temperature sintering activity. The cell Ni-YSZ/YSZ/LSCF(YSZ: yttria stabilized zirconia) with the cathode sintered at 800 ℃ for 2 h demonstrated excellent generation performance with the maximum power density of 0.97 W·cm-2 and the power density of 0.83 W·cm-2 at 0.7 V under operation at 700 ℃. Low temperature processing of the interlayer-free LSCF cathode was beneficial to simplify the cell structure and manufacturing process and to improve the cell performance.
- LSCF;Cathode;YSZ;Solid oxide fuel cell (SOFC);Solution combustion method
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Solution Combustion Synthesis and Characterization of Nanocrystalline La0.6Sr0.4Co0.2Fe0.8O3-δ Cathode Powders

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通讯作者: 陈斌, bchen63@163.com

Solution Combustion Synthesis and Characterization of Nanocrystalline La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode Powders