Synthesis and properties of La0.05Ba0.95Ti1-xMyO3 (M = Mn, Ce) as anode materials for solid oxide fuel cells - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Solid State Ionics Année : 2015

Synthesis and properties of La0.05Ba0.95Ti1-xMyO3 (M = Mn, Ce) as anode materials for solid oxide fuel cells

Résumé

Stoichiometric and sub-stoichiometric lanthanum barium titanates (LBT) of perovskite structure type, substituted or not with Mn and/or Ce at the Ti-site, were prepared by sol–gel route with heat treatment in air. All the compounds display a cubic Pm-3m symmetry, which remains stable in reducing atmosphere. Whereas Mn substitution highly promotes the reducibility of the material, the electrical and electrochemical performance of Mn-doped compounds is decreased with respect to non-doped sub-stoichiometric LBT. In contrast, the electrical conductivity and resistance polarization of Ce-substituted LBT are close to those of non-doped LBT and Ce-substituted LBT appears especially efficient in improving the catalytic properties for methane steam reforming and avoiding carbon formation.
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hal-01265761 , version 1 (08-03-2023)

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Paternité - Pas d'utilisation commerciale

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Cédric Périllat-Merceroz, Edouard Capoen, Pascal Roussel, Sébastien Rosini, Patrick Gélin, et al.. Synthesis and properties of La0.05Ba0.95Ti1-xMyO3 (M = Mn, Ce) as anode materials for solid oxide fuel cells. Solid State Ionics, 2015, 283, pp.21-29. ⟨10.1016/j.ssi.2015.11.005⟩. ⟨hal-01265761⟩
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