Chemical stability and oxygen transport properties of La1−xCaxFe1−yByO3−δ(with B = Co, Ni, Mg) perovskite membranes
In: Journal of Materials Research, Jg. 36 (2021-03-28), Heft 6, S. 1241-1249
Online
serialPeriodical
Zugriff:
Abstract: The mixed conductive perovskite La 1−x Ca x FeO 3−δ (LCF) exhibits high oxygen permeability. For further improvement of the oxygen permeability as well as the chemical stability, this study investigates the impact of the doping elements on the perovskite B-site. The cobalt (Co) doping of the LCF improved both the oxygen diffusion and the oxygen surface exchange. However, the oxygen semi-permeation flux of the Co-doped LCF sample was not stable at high temperatures under the high oxygen partial pressure difference (air/argon). The magnesium (Mg) doping in the B-site significantly improved the chemical stability of the LCF membranes, with the oxygen semi-permeation performances close to those obtained with the Co-doped LCF membranes. Thus, the Mg-doped LCF presented the best compromise between chemical stability and oxygen semi-permeation performance, which is applicable to the oxygen transport membranes or the cathodes in solid oxide fuel cells. Graphic abstract:
Titel: |
Chemical stability and oxygen transport properties of La1−xCaxFe1−yByO3−δ(with B = Co, Ni, Mg) perovskite membranes
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Autor/in / Beteiligte Person: | Minami, Shintaro ; Geffroy, Pierre-Marie ; Kagomiya, Isao ; Yamaguchi, Yuki ; Mizutani, Yasunobu ; Ogura, Yusuke |
Link: | |
Zeitschrift: | Journal of Materials Research, Jg. 36 (2021-03-28), Heft 6, S. 1241-1249 |
Veröffentlichung: | 2021 |
Medientyp: | serialPeriodical |
ISSN: | 0884-2914 (print) ; 2044-5326 (print) |
DOI: | 10.1557/s43578-021-00212-7 |
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