High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics
A new group of cobalt-free perovskite oxides, Ba0.975La0.025Fe1-xCuxO3-δ (BLFC, x = 0.05–0.15), was designed, characterized and applied as oxygen permeation membranes. It was found that BLFC oxides with Cu doping range of 0.075–0.15 maintain cubic perovskite phase in a wide range of temperatures. Mo...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-06-01
|
| Series: | Journal of Materiomics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847818301515 |
| _version_ | 1797765264311320576 |
|---|---|
| author | Zilu Liu Kui Li Hailei Zhao Konrad Świerczek |
| author_facet | Zilu Liu Kui Li Hailei Zhao Konrad Świerczek |
| author_sort | Zilu Liu |
| collection | DOAJ |
| description | A new group of cobalt-free perovskite oxides, Ba0.975La0.025Fe1-xCuxO3-δ (BLFC, x = 0.05–0.15), was designed, characterized and applied as oxygen permeation membranes. It was found that BLFC oxides with Cu doping range of 0.075–0.15 maintain cubic perovskite phase in a wide range of temperatures. More Cu introduced at the B-site results in a gradual increase of the electrical conductivity, which is attributed to the denser overlapping of electron clouds of Cu–O bonds. With increasing Cu content, the oxygen vacancy concentration increases and the oxygen ion migration energy decreases, leading to the highest oxygen permeation flux of 1.59 mL cm−2 min−1 recorded for Ba0.975La0.025Fe0.9Cu0.1O3-δ 1 mm thick membrane at 950 °C. However, the oxygen permeability decreases with further Cu doping, which may be correspond to a presence of defect association. Ba0.975La0.025Fe0.9Cu0.10O3-δ membrane with 0.7 mm thickness delivers stable oxygen permeation flux of 1.57 mL cm−2 min−1 for 200 h at 900 °C. All of the obtained results indicate that the developed BLFC with optimized Cu content (i.e. x = 0.1) is a very promising material for usage in oxygen separation applications. Keywords: Perovskite, Oxygen permeability, Structure stability, Oxygen ion migration |
| first_indexed | 2024-03-12T20:07:47Z |
| format | Article |
| id | doaj.art-65030f82290345438bc7b0f1c1992694 |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T20:07:47Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-65030f82290345438bc7b0f1c19926942023-08-02T01:57:38ZengElsevierJournal of Materiomics2352-84782019-06-0152264272High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramicsZilu Liu0Kui Li1Hailei Zhao2Konrad Świerczek3School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Municipal Key Lab for Advanced Energy Materials and Technologies, Beijing 100083, China; Corresponding author. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.AGH University of Science and Technology, Faculty of Energy and Fuels, al. A. Mickiewicza 30, 30-059 Krakow, Poland; AGH Centre of Energy, AGH University of Science and Technology, ul. Czarnowiejska 36, 30-054 Krakow, PolandA new group of cobalt-free perovskite oxides, Ba0.975La0.025Fe1-xCuxO3-δ (BLFC, x = 0.05–0.15), was designed, characterized and applied as oxygen permeation membranes. It was found that BLFC oxides with Cu doping range of 0.075–0.15 maintain cubic perovskite phase in a wide range of temperatures. More Cu introduced at the B-site results in a gradual increase of the electrical conductivity, which is attributed to the denser overlapping of electron clouds of Cu–O bonds. With increasing Cu content, the oxygen vacancy concentration increases and the oxygen ion migration energy decreases, leading to the highest oxygen permeation flux of 1.59 mL cm−2 min−1 recorded for Ba0.975La0.025Fe0.9Cu0.1O3-δ 1 mm thick membrane at 950 °C. However, the oxygen permeability decreases with further Cu doping, which may be correspond to a presence of defect association. Ba0.975La0.025Fe0.9Cu0.10O3-δ membrane with 0.7 mm thickness delivers stable oxygen permeation flux of 1.57 mL cm−2 min−1 for 200 h at 900 °C. All of the obtained results indicate that the developed BLFC with optimized Cu content (i.e. x = 0.1) is a very promising material for usage in oxygen separation applications. Keywords: Perovskite, Oxygen permeability, Structure stability, Oxygen ion migrationhttp://www.sciencedirect.com/science/article/pii/S2352847818301515 |
| spellingShingle | Zilu Liu Kui Li Hailei Zhao Konrad Świerczek High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics Journal of Materiomics |
| title | High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics |
| title_full | High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics |
| title_fullStr | High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics |
| title_full_unstemmed | High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics |
| title_short | High-performance oxygen permeation membranes: Cobalt-free Ba0.975La0.025Fe1-xCuxO3-δ ceramics |
| title_sort | high performance oxygen permeation membranes cobalt free ba0 975la0 025fe1 xcuxo3 δ ceramics |
| url | http://www.sciencedirect.com/science/article/pii/S2352847818301515 |
| work_keys_str_mv | AT ziluliu highperformanceoxygenpermeationmembranescobaltfreeba0975la0025fe1xcuxo3dceramics AT kuili highperformanceoxygenpermeationmembranescobaltfreeba0975la0025fe1xcuxo3dceramics AT haileizhao highperformanceoxygenpermeationmembranescobaltfreeba0975la0025fe1xcuxo3dceramics AT konradswierczek highperformanceoxygenpermeationmembranescobaltfreeba0975la0025fe1xcuxo3dceramics |