BENAMIRA, Messaoud; RINGUEDE, Armelle; CASSIR, Michel; HORWAT, David; PIERSON, Jean-François; LENORMAND, Pascal; ANSART, Florence; BASSAT, Jean-Marc.; FULLENWARTH, Julien

doi:10.2174/1876973X01002010087

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BENAMIRA, Messaoud
Laboratoire d'Electrochimie, Chimie des Interfaces et Modélisation pour l'Energie (LECIME - UMR 7575) [LECIME]

RINGUEDE, Armelle
Laboratoire d'Electrochimie, Chimie des Interfaces et Modélisation pour l'Energie (LECIME - UMR 7575) [LECIME]

CASSIR, Michel
Laboratoire d'Electrochimie, Chimie des Interfaces et Modélisation pour l'Energie (LECIME - UMR 7575) [LECIME]

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Open Fuels and Energy Science Journal. 2009, vol. 2, p. 87-99

Bentham Open

Résumé en anglais

The effect of an 80 nm YSZ interfacial layer, deposited onto a YSZ pellet by different techniques (dip-coating, sputtering and atomic layer deposition) at the SOFC cathode/electrolyte interface to allow a maximum adhesion of the thick cathode layer, was thoroughly analysed. The LSM cathode was deposited on the solid electrolyte by painting and sintered in air at 1200°C for 2 h. The morphological and structural analyses of the samples were performed by scanning electron microscopy and X-ray diffraction; their electrical properties were examined between 390 and 700°C by electrochemical impedance spectroscopy. The impedance responses showed three different contributions. The highfrequency arc is attributed to the YSZ electrolyte. The electrode processes associated with the medium- and low frequency arcs were discussed. The electrochemical performance was influenced by the microstructure at the electrode/electrolyte interface.< Réduire

Mots clés en anglais

SOFC

Thin layers

Impedance spectroscopy

Electrical properties

Lanthanum strontium manganite (LSM)

Yttriadoped zirconia (YSZ)

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Comparison between ultrathin films of YSZ deposited at the solid oxide fuel cell cathode/electrolyte interface by atomic layer deposition, dip-coating or sputtering

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