Electrochemical synthesis and properties of ceria films grown on stainless steel
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Electrochemical synthesis of ceria films was performed on a stainless steel substrate in view of Solid Oxide Fuel Cells (SOFC) applications. Films were obtained from aqueous nitrate solutions via cathodic deposition method at room temperature. A constant potential value of -0.8 V/(SCE) was applied to reduce the molecular oxygen as hydroxide precursor, leading to a formation of adherent, homogeneous and covering films in 20 min deposition time. Structure, morphology and composition of as-grown coatings were studied by X-ray diffraction, Raman and energy-dispersive X-ray spectroscopy, as well as scanning electron microscopy. Cubic fluorite-type nanostructured ceria of leaf-like particles was synthesized. Thermal annealing (600A degrees C, 1 h) was found to enhance ceria crystallinity.
Keywords:electrochemistry / synthesis / ceria films / crystallinity
Source:Russian Journal of Physical Chemistry A, 2011, 85, 13, 2358-2362
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-45012)
- ANR (Agence National de la Recherche-France) [ANR JCJC06-0131]