VIBHU, Vaibhav; FLURA, Aurelien; ROUGIER, Aline; NICOLLET, Clément; FOURCADE, Sébastien; HUNGRÍA, Teresa; GRENIER, Jean-Claude; BASSAT, Jean-Marc.

doi:10.1016/j.jechem.2019.10.012

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VIBHU, Vaibhav
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

FLURA, Aurelien
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ROUGIER, Aline
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

Journal of Energy Chemistry. 2020, vol. 46, p. 62-70

Elsevier

Résumé en anglais

The chemical and electrochemical stability of lanthanide nickelates La2NiO4+δ (LNO), Pr2NiO4+δ (PNO) and their mixed compounds La2-xPrxNiO4+δ (LPNOs) with x = 0.5, 1 or 1.5 is reported. The aim is to promote these materials as efficient electrodes for solid oxide fuel cell (SOFC) and/or solid oxide electrolysis cell (SOEC). La2NiO4+δ and La1.5Pr0.5NiO4+δ compounds are chemically very stable as powders over one month in the temperature range 600 − 800°C, while the other materials rich in praseodymium progressively decompose into various perovskite-deriving components with additional Pr6O11. Despite their uneven properties, all these materials are quite efficient and sustainable as electrodes on top of gadolinium doped ceria (GDCBL) // yttrium doped zirconia (8YSZ) electrolyte, for one month at 700°C without polarization. Under polarization (300 mA·cm−2), the electrochemical performances of LNO, PNO and La1.5Pr0.5NiO4+δ (LP5NO) quickly degrade in SOFC mode, i.e. for the oxygen reduction reaction, while they show durability in SOEC mode, i.e. for the oxide oxidation reaction.< Réduire

Mots clés en anglais

Lanthanide nickelates

SOFC cathode

SOEC anode

Ageing

Degradation 2

DOI

http://dx.doi.org/10.1016/j.jechem.2019.10.012

Project ANR

Performance Et Robustesse pour les cellules d'Electrolyse haute température de Nouvelle génération
EleCtrOdes architecturées pour la Réalisation d'Electrolyseurs de la Vapeur d'Eau à haute température - ANR-18-CE05-0036

Origine

Importé de hal

Unités de recherche

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