High Temperature - FTIR Characterization of Gadolinia Doped Ceria

Aliye Arabaci; Nuri Solak

doi:10.4028/www.scientific.net/AST.72.249

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 72High Temperature - FTIR Characterization of...

High Temperature - FTIR Characterization of Gadolinia Doped Ceria

Abstract:

Doped ceria-based (DC) materials have recently been considered as the most promising solid electrolytes for intermediate temperature solid oxide fuel cell (IT-SOFC) applications. Doped ceria is usually prepared via thermal decomposition of its water soluble salts, especially, acetates and nitrates. The properties of the obtained final product directly influenced by the starting material and the decomposition products. Therefore, it is crucial to understand the decomposition steps and intermediate products. Number of experimental work have been reported using various in-situ and ex-situ techniques such as thermogravimetry with mass spectrometry (TG/DTA-MS), X-ray diffraction with differential scanning calorimeter (XRD-DSC). However, the available literature data is limited and not reasonably in agreement with each other. High Temperature FT-IR spectroscopy, TG/DTA-MS, XRD, techniques were used and results are compared with literature. A good agreement between the thermal analyses and HT-FTIR results were obtained. Possible decomposition mechanism is discussed.

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Advances in Science and Technology (Volume 72)

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249-254

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https://doi.org/10.4028/www.scientific.net/AST.72.249

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October 2010

Authors:

Aliye Arabaci, Nuri Solak

Keywords:

High Temperature-FTIR, Solid Oxide Fuel Cell (SOFC), TG/DTA-MS, X-Ray Diffraction (XRD)

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