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 ]
Language
en
Article de revue
This item was published in
Solid State Ionics. 2009, vol. 180, n° 20-22, p. 1183-1189
Elsevier
English Abstract
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 ...Read more >
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.Read less <
Origin
Hal imported