Structural and Electrical Properties of Gadolinia-doped Ceria Mixed with Alkali Earth Carbonates for SOFC Applications

被引：8

作者：

Benamira, M. ^{[1
]}

Albin, V. ^{[1
]}

Ringuede, A. ^{[1
]}

Vannier, R. -N. ^{[2
]}

Boden, A. ^{[3
]}

Lagergren, C. ^{[3
]}

Cassir, M. ^{[1
]}

机构：

[1] ENSCP, CNRS, UMR 7575, Lab Electrochim & Chim Analyt, Paris 6, France

[2] CNRS, UMR 8181, Unite Catalyse, Villeneuve, France

[3] KTH Chem Sci & Engn, Dept Chem Engn, Stockholm, Sweden

来源：

SOLID OXIDE FUEL CELLS 10 (SOFC-X), PTS 1 AND 2 | 2007年 / 7卷 / 01期

关键词：

D O I：

10.1149/1.2729343

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The properties of composite materials based on mixtures of gadolinium-doped ceria (GDC) and Li2CO3-K2CO3 are analyzed as potential SOFC electrolytes. In a temperature range higher than 500 degrees C, their ionic conductivity is significantly higher than for single GDC. Discontinuities were found in the conductivity Arrhenius diagram (sigma vs. 1/T) around the melting point of the carbonate mixture (490 degrees C), showing, at least partially, the contribution of molten carbonates. At this stage, precise mechanisms are still under analysis.

引用

页码：2261 / +

页数：2

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