Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells
(Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d, or BSCF(1 + x), (0 = x = 0.3) oxides were synthesized and investigated as cathodes for intermediate-temperature solid-oxide fuel cells. The A-site cation excess in BSCF(1 + x) resulted in a lattice expansion and the creation of more active sites for oxygen reduction re...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
Pergamon Press
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/18709 |
| _version_ | 1848749822924816384 |
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| author | Zhou, W. Ran, R. Shao, Zongping Zhuang, W. Jia, J. Gu, H. Jin, W. Xu, N. |
| author_facet | Zhou, W. Ran, R. Shao, Zongping Zhuang, W. Jia, J. Gu, H. Jin, W. Xu, N. |
| author_sort | Zhou, W. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d, or BSCF(1 + x), (0 = x = 0.3) oxides were synthesized and investigated as cathodes for intermediate-temperature solid-oxide fuel cells. The A-site cation excess in BSCF(1 + x) resulted in a lattice expansion and the creation of more active sites for oxygen reduction reaction due to the lowered valence states of the B-site ions and the increased oxygen vacancy concentration, which improved the oxygen adsorption process. On the other hand, the A-site excess could also result in higher resistances for oxygen adsorption (due to the formation of BaO and/or SrO impurities), and oxygen-ion transfer (by facilitating the solid-phase reaction between the cathode and the electrolyte). By taking all these factors into account, we found BSCF1.03 to be the optimal composition, which lead to a peak power density of 1026.2 ± 12.7 mW cm-2 at 650 °C for a single cell. © 2008 Acta Materialia Inc. |
| first_indexed | 2025-11-14T07:27:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-18709 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:27:03Z |
| publishDate | 2008 |
| publisher | Pergamon Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-187092017-09-13T13:46:03Z Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells Zhou, W. Ran, R. Shao, Zongping Zhuang, W. Jia, J. Gu, H. Jin, W. Xu, N. (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d, or BSCF(1 + x), (0 = x = 0.3) oxides were synthesized and investigated as cathodes for intermediate-temperature solid-oxide fuel cells. The A-site cation excess in BSCF(1 + x) resulted in a lattice expansion and the creation of more active sites for oxygen reduction reaction due to the lowered valence states of the B-site ions and the increased oxygen vacancy concentration, which improved the oxygen adsorption process. On the other hand, the A-site excess could also result in higher resistances for oxygen adsorption (due to the formation of BaO and/or SrO impurities), and oxygen-ion transfer (by facilitating the solid-phase reaction between the cathode and the electrolyte). By taking all these factors into account, we found BSCF1.03 to be the optimal composition, which lead to a peak power density of 1026.2 ± 12.7 mW cm-2 at 650 °C for a single cell. © 2008 Acta Materialia Inc. 2008 Journal Article http://hdl.handle.net/20.500.11937/18709 10.1016/j.actamat.2008.02.002 Pergamon Press restricted |
| spellingShingle | Zhou, W. Ran, R. Shao, Zongping Zhuang, W. Jia, J. Gu, H. Jin, W. Xu, N. Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| title | Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| title_full | Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| title_fullStr | Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| title_full_unstemmed | Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| title_short | Barium- and strontium-enriched (Ba0.5Sr0.5)1+xCo0.8Fe0.2O3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| title_sort | barium- and strontium-enriched (ba0.5sr0.5)1+xco0.8fe0.2o3-d oxides as high-performance cathodes for intermediate-temperature solid-oxide fuel cells |
| url | http://hdl.handle.net/20.500.11937/18709 |