LUEBBE, Henning; VAN HERLE, Jan; HOFMANN, Heinrich; BOWEN, Paul; ASCHAUER, Ulrich; SNIJKERS, Frans; SCHINDLER, Hans-Juergen; VOGT, Ulrich; LALANNE, Cécile

doi:10.1016/j.ssi.2009.01.010

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LUEBBE, Henning
Laboratory of Industrial Energy Systems [LENI]

VAN HERLE, Jan
Laboratory of Industrial Energy Systems [LENI]

HOFMANN, Heinrich
Powder Technology Laboratory

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Solid State Ionics. 2009, vol. 180, n° 11-13, p. 805-811

Elsevier

Résumé en anglais

Fabrication conditions to obtain dense electrolyte double layers on a porous micro-tubular cathode substrate were investigated. Porous tubes of a nickelate material, Nd1.95NiO4 + δ, were fabricated by cold-isostatic pressing (CIP) and sintering. Thin films of electrolyte powders Ce0.9Gd0.1O1.95 (GDC) and Zr0.89Sc0.1Ce0.01O1.95 (SSZ) were applied by dip-coating in aqueous suspensions. Electrolyte powders had been attrition-milled to decrease their particle size and densification temperature. The quantity of polyacrylic acid (PAA) as dispersant was optimised by ζ-potential measurements. The densification behaviour was studied by dilatometry and SEM-imaging. A sintering temperature of 1250 °C was found to densify GDC whereas SSZ-layers remained slightly porous.< Réduire

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Micro-tubular SOFC

Cathode-supported cell (CSC)

Nickelate oxide

Colloidal stability

Cosintering

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Cathode-supported micro-tubular SOFCs based on Nd<sub>1.95</sub>NiO<sub>4 + </sub><sub><i>δ</i></sub>: Fabrication and characterisation of dip-coated electrolyte layers

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