Influence of oxygen partial pressure on the oxygen diffusion and surface exchange coefficients in mixed conductors
| Autor: | Pierre-Marie Geffroy, Henry J. M. Bouwmeester, Thierry Chartier, Jean-Claude Grenier, Jean-Marc Bassat, L. Guironnet |
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| Přispěvatelé: | IRCER - Axe 1 : procédés céramiques (IRCER-AXE1), Institut de Recherche sur les CERamiques (IRCER), Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Institute for Nanotechnology, University of Twente [Netherlands], Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Inorganic Membranes |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Work (thermodynamics)
Materials science Oxide chemistry.chemical_element Ionic bonding Thermodynamics 02 engineering and technology 01 natural sciences Oxygen Mixed conductor chemistry.chemical_compound 0103 physical sciences Materials Chemistry Oxygen surface exchanges 010302 applied physics Oxygen isotopic exchange Oxygen transport Partial pressure [CHIM.MATE]Chemical Sciences/Material chemistry Permeation 021001 nanoscience & nanotechnology Membrane chemistry Ceramics and Composites Oxygen partial pressure 0210 nano-technology |
| Zdroj: | Journal of the European Ceramic Society Journal of the European Ceramic Society, Elsevier, 2019, 39 (1), pp.59-65. ⟨10.1016/j.jeurceramsoc.2018.03.034⟩ Journal of the European Ceramic Society, 39(1), 59-65. Elsevier |
| ISSN: | 0955-2219 |
| DOI: | 10.1016/j.jeurceramsoc.2018.03.034⟩ |
| Popis: | International audience; The performances of mixed ionic and electronic conductors is used in many applications, such as oxygen transport membranes or electrodes in solid oxide fuel cells. The performances of these systems depend mainly on two fundamental parameters including oxygen diffusion (DO) and the oxygen exchange coefficient (k). This work focuses on the impact of the oxygen partial pressure on oxygen diffusion and surface exchange coefficients of mixed conducting materials, as reported studies are scarce in the literature. In this way, two different mixed conducting materials are studied, namely, La0.6Sr0.4Fe0.6Ga0.4O3-δ, a perovskite-type material, and the nickelate La2NiO4+δ. The DO and k coefficients are determined by a specific oxygen permeation measurement and by the isotopic exchange depth profile method. |
| Databáze: | OpenAIRE |
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