Electrophysical properties of layered perovskites LnBaCo2-x Cu x O5+δ (Ln = Sm, Nd) for solid oxide fuel cells

被引：10
|
作者：
Zhuravleva, T. A. [1 ]
机构：
[1] Russian Acad Sci, Inst High Temp Electrochem, Ural Branch, Ekaterinburg, Russia
来源：
RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2011年 / 47卷 / 06期
关键词：
electric conductivity; linear thermal expansion coefficient (LTEC); LnBaMe(2)O(5+delta); OXYGEN NONSTOICHIOMETRY; ELECTRICAL-PROPERTIES; CATHODES; ION;
D O I：
10.1134/S1023193511060164
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The influence of doping with copper oxide on the phase composition, electric conductivity, and linear thermal expansion coefficient (LTEC) of SmBaCo2O5 + delta and NdBaCo2O5 + delta was studied. The sample homogeneity region has been determined with using XRD. The samples conductivity decreased as the dopant concentration increased. The character of the temperature dependence of conductivity changed at high copper contents. In a reductive atmosphere, the conductivity of the samples at first decreased and then remained constant. The linear thermal expansion coefficient decreased as the amount of the incorporated dopant increased.
引用
收藏
页码：676 / 680
页数：5
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