Electrochemical study of the Nd<sub>1.95</sub>NiO<sub>4 + </sub><sub><i>δ</i></sub>/oxide electrolyte interface
FOULETIER, Jacques
Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ]
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Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ]
Langue
en
Article de revue
Ce document a été publié dans
Solid State Ionics. 2009, vol. 180, n° 20-22, p. 1183-1189
Elsevier
Résumé en anglais
Nickelate-based oxides are potential cathodes in Solid Oxide Fuel Cells operating at intermediate temperatures. The chemical compatibility between apatite electrolyte, i.e., La<sub>9</sub>Sr<sub>1</sub>Si<sub>6</sub>O<su ...Lire la suite >
Nickelate-based oxides are potential cathodes in Solid Oxide Fuel Cells operating at intermediate temperatures. The chemical compatibility between apatite electrolyte, i.e., La<sub>9</sub>Sr<sub>1</sub>Si<sub>6</sub>O<sub>26.5</sub>, and Nd-deficient nickelate, i.e., Nd<sub>1.95</sub>NiO<sub>4 + <i>δ</i></sub>, has been characterized. The equilibrium between the nickelate material and the gas phase has been studied as functions of temperature and oxygen partial pressure, using potentiometric measurements with microelectrodes, i.e., metallic or ceramic point electrodes. Two solid electrolytes were used, i.e., apatite and yttria-stabilized zirconia. The response of the nickelate is discussed in terms of oxygen stoichiometry.< Réduire
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