A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance
We develop a facile and effective top-down method for the fabrication of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) oxide with a high specific surface area (∼25 m2 g−1). The original BSCF is first synthesized by the simple EDTA–citric acid complexing method, and then treated in H2O2 to obtain the me...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier SA
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/38106 |
| _version_ | 1848755229931077632 |
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| author | Su, C. Xu, X. Chen, Y. Liu., Y. Tade, Moses Shao, Zongping |
| author_facet | Su, C. Xu, X. Chen, Y. Liu., Y. Tade, Moses Shao, Zongping |
| author_sort | Su, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We develop a facile and effective top-down method for the fabrication of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) oxide with a high specific surface area (∼25 m2 g−1). The original BSCF is first synthesized by the simple EDTA–citric acid complexing method, and then treated in H2O2 to obtain the mesoporous BSCF. The structure and morphology of as-prepared BSCF power is systematically characterized by N2 adsorption/desorption isotherms, XRD, TEM, SEM and ICP techniques. A possible mechanism for the creation of mesoporous BSCF is proposed, in which Ba2+ and Sr2+ dissolve selectively from partial BSCF particles during the catalytic decomposition of H2O2. The electrochemical properties are investigated by the EIS and I–V test in the symmetrical cell and integrated single cell configurations, respectively. The interfacial reaction between BSCF electrode and YSZ electrolyte was suppressed successfully by using the BSCF with high specific surface area to decrease the sintering temperature (800 °C), thus the electrode exhibits high oxygen reduction reaction activity. The solid oxide fuel cell (SOFC) achieves an exciting peak power density of ∼1800 mW cm−2 at 800 °C, signifying the mesoporous BSCF, together with the preparation method, has a good application prospect in the development of SOFCs. |
| first_indexed | 2025-11-14T08:53:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-38106 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:53:00Z |
| publishDate | 2015 |
| publisher | Elsevier SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-381062017-09-13T14:09:29Z A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance Su, C. Xu, X. Chen, Y. Liu., Y. Tade, Moses Shao, Zongping Solid oxide fuel cell Hydrogen peroxide Perovskite Mesopore Electrochemical performance We develop a facile and effective top-down method for the fabrication of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) oxide with a high specific surface area (∼25 m2 g−1). The original BSCF is first synthesized by the simple EDTA–citric acid complexing method, and then treated in H2O2 to obtain the mesoporous BSCF. The structure and morphology of as-prepared BSCF power is systematically characterized by N2 adsorption/desorption isotherms, XRD, TEM, SEM and ICP techniques. A possible mechanism for the creation of mesoporous BSCF is proposed, in which Ba2+ and Sr2+ dissolve selectively from partial BSCF particles during the catalytic decomposition of H2O2. The electrochemical properties are investigated by the EIS and I–V test in the symmetrical cell and integrated single cell configurations, respectively. The interfacial reaction between BSCF electrode and YSZ electrolyte was suppressed successfully by using the BSCF with high specific surface area to decrease the sintering temperature (800 °C), thus the electrode exhibits high oxygen reduction reaction activity. The solid oxide fuel cell (SOFC) achieves an exciting peak power density of ∼1800 mW cm−2 at 800 °C, signifying the mesoporous BSCF, together with the preparation method, has a good application prospect in the development of SOFCs. 2015 Journal Article http://hdl.handle.net/20.500.11937/38106 10.1016/j.jpowsour.2014.10.177 Elsevier SA restricted |
| spellingShingle | Solid oxide fuel cell Hydrogen peroxide Perovskite Mesopore Electrochemical performance Su, C. Xu, X. Chen, Y. Liu., Y. Tade, Moses Shao, Zongping A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| title | A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| title_full | A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| title_fullStr | A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| title_full_unstemmed | A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| title_short | A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| title_sort | top-down strategy for the synthesis of mesoporous ba0.5sr0.5co0.8fe0.2o3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance |
| topic | Solid oxide fuel cell Hydrogen peroxide Perovskite Mesopore Electrochemical performance |
| url | http://hdl.handle.net/20.500.11937/38106 |