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Structural investigations on electrodes – electrolytes systems for intermediate temperature solid oxide fuel cell applications

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: L. DUTA, G. DORCIOMAN, A. C. POPESCU, I. N. MIHAILESCU, P. NITA, I. MERCIONIU, A. BIRSAN, I. BIBICU, S. CONSTANTINESCU, N. POPESCU–POGRION

Editorial: OPTOELECTRONICS AND ADVANCED MATERIALS – RAPID COMMUNICATIONS, vol. 6, 11-12, p.1073-1080, 2012.

Rezumat:

We report on the synthesis of electrode layers by Pulsed Laser Deposition technique. We selected Nickel Oxide-8Yttria-Stabilized Zirconia as anode, La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite material as cathode, and Yttria doped (Ceria–α Alumina) as electrolyte. We studied electrode structure (average grain size, porosity, and grain shape), the deposition uniformity and electrode-electrolyte interfaces. The electrodes were investigated in terms of morphology (Scanning Electron Microscopy) and composition (Energy Dispersive X-ray Spectroscopy). The initial powder and the synthesized cathodes have been investigated superficially and in bulk by Mössbauer spectroscopy, in order to detect and analyse local properties. We identified the conditions for electrode layer synthesis in respect with porosity, composition, and mean grain size.

Cuvinte cheie: Intermediate Temperature-Solid Oxide Fuel Cell, Nickel Oxide-8Yttria-Stabilized Zirconia, La0.6Sr0.4Co0.2Fe0.8O3−δ, Yttria doped (Ceria–α Alumina) electrolyte, Pulsed Laser Deposition, Electron Microscopy, X Ray Diffraction, Mössbauer Spectroscopy