OGIER, Tiphaine; MAUVY, Fabrice; BASSAT, Jean-Marc.; LAURENCIN, Jérôme; MOUGIN, Julie; GRENIER, Jean-Claude

doi:10.1016/j.ijhydene.2015.09.107

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OGIER, Tiphaine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MAUVY, Fabrice
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

BASSAT, Jean-Marc.
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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International Journal of Hydrogen Energy. 2015, vol. 40, n° 46, p. 15885-15892

Elsevier

Resumen en inglés

Improving the oxygen electrode performances of the single solid oxide electrolysis cell (SOEC) is of peculiar interest as it contributes to a large extent to the cell polarization resistance. The present study focuses on alternative oxygen electrode materials: the oxygen overstoichiometric rare-earth nickelate oxides Ln2NiO4+δ (Ln = La, Pr or Nd). Their electrochemical properties are measured on three-electrode symmetrical half-cells under zero dc conditions and under anodic polarization. The electrochemical characteristics are compared to those of the usual perovskite La0.6Sr0.4Fe0.8Co0.2O3-δ (LSFC) electrode. Under polarization, in the temperature range from 600 °C to 800 °C, the Pr2NiO4+δ-based cells exhibit the highest performances. At the same anodic overpotential of 0.15 V/Pt/air, the current densities measured through Pr2NiO4+δ nickelate-based cells are more than ten times larger than those obtained with a cell based on LSCF. The modeling of the anodic overpotential phenomena (activation and concentration terms) occurring at the oxygen electrode is achieved and discussed.< Leer menos

DOI

http://dx.doi.org/10.1016/j.ijhydene.2015.09.107

Proyecto ANR

Stacks Expérimentaux et Modules Innovants pour EHT - ANR-05-PANH-0019
FIabilisation De l'ELectrolYse de l'eau à haute température pour la production d'Hydrogène - ANR-09-HPAC-0005

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Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026