Synthesis, structure, and electrochemical properties of epitaxial perovskite La0.8Sr0.2CoO3 film on YSZ substrate
Synthesis, structure, and electrochemical properties of epitaxial perovskite La0.8Sr0.2CoO3 film on YSZ substrate
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DOI：
10.1016/j.ssi.2005.12.032
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发表时间：
2006-02-01
影响因子：
3.2
通讯作者：
Takeda, Y
中科院分区：
文献类型：
--
作者：
Mori, D;Oka, H;Takeda, Y
采用脉冲激光沉积方法在氧化钇稳定氧化锆 (YSZ) 单晶上沉积用于 SOFC 阴极的钙钛矿 La0.8Sr0.2CoO3 (LSC) 外延膜。通过薄膜 X 射线衍射测量、原子力显微镜 (AFM)、透射电子显微镜 (TEM) 和交流阻抗谱对薄膜进行了表征。薄膜方向取决于基材平面。 YSZ（100）和（111）基板上的LSC薄膜显示出具有不同孪晶结构的（110）取向，而YSZ（110）基板上的LSC薄膜则具有（100）和（112）取向。薄膜的表面形态还取决于基材的方向。这些薄膜根据方向表现出不同的电极特性。讨论了性能、薄膜取向、表面形貌和晶格失配之间的关系。 (c) 2006 Elsevier B.V. 保留所有权利。
Epitaxial films of the perovskite, La0.8Sr0.2CoO3 (LSC), for SOFCs cathode were deposited on yttria-stabilized zirconia (YSZ) single crystals by pulsed laser deposition method. The films were characterized by thin-film X-ray diffraction measurement, atomic force microscopy (AFM), transmission electron microscope (TEM), and ac impedance spectroscopy. The film orientations depend on the substrate planes. The LSC films on the YSZ (100) and (111) substrates showed the (110) orientation with different twin structures, while those on the YSZ (110) had (100) and (112) orientations. Surface morphology of the films also depends on the substrate orientations. These films showed different electrode properties depending on the orientations. The relationships between the properties, the film orientations, surface morphology, and lattice misfit are discussed. (c) 2006 Elsevier B.V. All rights reserved.