Characterisation of La0.6Sr0.4Co0.2Fe0.8O3-d and Ba0.5Sr0.5Co0.8Fe0.2O3-d as Cathode Materials for the Application in Intermediate Temperature Fuel Cells
Characterisation of La0.6Sr0.4Co0.2Fe0.8O3-d and Ba0.5Sr0.5Co0.8Fe0.2O3-d as Cathode Materials for the Application in Intermediate Temperature Fuel Cells
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La0.6Sr0.4Co0.2Fe0.8O3-d 和 Ba0.5Sr0.5Co0.8Fe0.2O3-d 正极材料在中温燃料电池中的表征
DOI：
10.1149/1.2729221
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
P. Holtappels
中科院分区：
文献类型：
--
作者：
P. Ried;E. Bucher;W. Preis;W. Sitte;P. Holtappels
C：好的。6 sr0。4 co0。2 fe0。8O3 δ和Ba0。5 sr0。5 co0。8 fe0。2 o3 -δ。采用喷雾热解法合成了两种材料，并通过XRD和ICP-AES分析对其进行了相纯度和元素比表征。用膨胀法研究了煅烧粉末的烧结性能和致密烧结试样的热膨胀系数。作为氧交换反应的重要参数，比较了化学表面交换系数(k)、化学扩散系数(D)和电导率。
800 C: La0. 6Sr0. 4Co0. 2Fe0. 8O3-δ and Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-δ. Both materials were synthesized by spray pyrolysis and characterised with respect to phase purity and to the element ratio by XRD and ICP-AES analysis. The sintering behaviour of the calcined powders and the coefficients of thermal expansion of dense sintered samples were studied by dilatometry. As important parameters for the oxygen exchange reaction the chemical surface exchange coefficients (k) and chemical diffusion coefficients (D) as well as the electrical conductivities are compared.