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Título

Fabrication and performance of Nd1.95NiO4+δ (NNO) cathode supported microtubular solid oxide fuel cells

Autor Laguna-Bercero, M. A.; Luebbe, Henning; Silva-Treviño, J.; Campana, R.; Herle, Jan van
Fecha de publicación 2012
Citación 10th European SOFC Forum 2012
ResumenMicrotubular SOFC present significant advantages in comparison with the traditional planar SOFC configuration. In particular, the tubular design facilitates sealing and also reduces thermal gradients. As a consequence, rapid starts up times are possible. In addition, another advantage of the microtubular configuration is their higher power density per unit volume. Due to these properties, those devices are especially attractive for portable applications. There has been a great interest in microtubular SOFCs in the recent years, mainly using anode supported cells. Electrolyte supported cells have also been reported, but there are relatively few investigations using the cathode as the support. In the present paper, Nd1.95NiO4+δ (NNO) has been chosen as the cathode support, as it presents superior oxygen transport properties in comparison with other commonly used cathode materials, such as LSCF or LSM, and these material has been proven as an excellent cathode for SOFC and SOEC applications. Results on the fabrication and characterization of NNO cathode supported SOFC will be presented. The tubes were fabricated by cold isostatic pressing (CIP) using NNO powders and corn starch as the pore former. The electrolyte (GDC based) was deposited by wet powder spray (WPS) on top of the pre-sintered tubes and then co-sintered. Finally, a NiOGDC paste was dip-coated as the anode. Optimization of the fabrication process as well as the electrochemical performance of single cells will be further discussed.
Descripción Trabajo presentado al 10th European Solid Oxide Fuell Cell Forum celebrado en Lucerna (Suiza) del 26 al 29 de Junio de 2012.
Versión del editorhttp://www.efcf.com/index.php?id=241
URI http://hdl.handle.net/10261/107895
Aparece en las colecciones: (ICMA) Comunicaciones congresos
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