Influence of a La0.6Sr0.4CoO3-δ Functional Layer on (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-δ Oxygen Transport Membranes (OTMs)
Influence of a La0.6Sr0.4CoO3-δ Functional Layer on (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-δ Oxygen Transport Membranes (OTMs)
复制标题
La0 6Sr0 4CoO3-δ 功能层对 (Ba0 5Sr0 5)(Co0 8Fe0 2)O3-δ 氧传输膜 (OTM) 的影响
DOI：
10.1149/07207.0037ecst
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
E. Ivers-Tiffée
中科院分区：
文献类型：
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作者：
L.-S. Unger;M. Meffert;V. Wilde;H. Störmer;C. Niedrig;W. Menesklou;S. F. Wagner;D. Gerthsen;E. Ivers-Tiffée
纳米多孔La0。6 sr0。4CoO3-δ (LSC)薄膜的厚度在100 ~ 500 nm之间。这些层被应用在薄的Ba0上。5 sr0。5 co0。8 fe0。2O3-δ衬底（厚度≈400µm）以增强氧表面交换。采用电导率弛豫（ECR）测定了未涂覆和涂覆lsc的致密BSCF陶瓷体样品的表面交换系数k δ。结合不同氧分压下的ECR测量结果和透射电子显微镜（TEM）分析，研究和讨论了纳米结构功能LSC层对致密BSCF陶瓷膜的影响。通过分析扫描TEM获得了时效前后的元素分布，以解决LSC与BSCF之间的阳离子互扩散问题。
Nanoporous La0. 6Sr0. 4CoO3-δ (LSC) thin films with a thickness between 100 and 500 nm were derived from metal-organic precursors. These layers were applied onto a thin Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-δ substrate (thickness≈ 400 µm) in order to enhance oxygen surface exchange. The surface exchange coefficient k δ of uncoated and LSC-coated dense BSCF ceramic bulk samples were determined by electrical conductivity relaxation (ECR) measurements. By combining the results from these ECR measurements under varying oxygen partial pressures with transmission electron microscopy (TEM) analyses the influence of the nanostructured functional LSC layer on the dense BSCF ceramic membrane was investigated and discussed. Elemental distributions before and after aging obtained by analytical scanning TEM were carried out to address cation interdiffusion between LSC and BSCF.