Tape casting of nanocrystalline ceria gadolinia powder |
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Authors: | Lorenz P. Meier Lukas Urech Ludwig J. Gauckler |
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Affiliation: | a Riedtlistr. 67, 8006, Zurich, Switzerland;b Nonmetallic Materials, Swiss Federal Institute of Technology, Switzerland |
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Abstract: | A ceramic ceria gadolinia solid solution membrane for solid oxide fuel cells was fabricated by tape casting using a nanopowder of 37 nm average particle size. A novel combination of solvent and dispersant was used to disperse the nanoparticles. The polymer was added in a dilute stage to guarantee a homogeneous distribution. After casting a remarkable densification of the cast tape suspension from a solid loading of 20 up to 42 vol.% was observed during drying. The green tape was sintered to >92% theoretical density and was dense towards perfusion. The resulting grain size in the sintered specimen still was <200 nm. |
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Keywords: | Tape casting CeO2 Fuel cell Nanoparticles |
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