Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2
© 2018 Thermodynamic predictions and electrochemical analysis of secondary phase formation in SO2containing atmosphere on the surface of La1-xSrxCo0.2Fe0.8O3±d(x = 0.2–0.4) electrodes of solid oxide fuel cells have been carried out utilizing the CALculation of Phase Diagram (CALPHAD) approach. Impac...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Pergamon
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP150102025 http://hdl.handle.net/20.500.11937/73197 |
| _version_ | 1848762950359187456 |
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| author | Darvish, S. Wang, C. Jiang, San Ping Zhong, Y. |
| author_facet | Darvish, S. Wang, C. Jiang, San Ping Zhong, Y. |
| author_sort | Darvish, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Thermodynamic predictions and electrochemical analysis of secondary phase formation in SO2containing atmosphere on the surface of La1-xSrxCo0.2Fe0.8O3±d(x = 0.2–0.4) electrodes of solid oxide fuel cells have been carried out utilizing the CALculation of Phase Diagram (CALPHAD) approach. Impacts of temperature, SO2partial pressure, O2partial pressure as well as the cathode composition on the formation of secondary phases have been investigated and correlated with the previous investigations in the literature. The results predict that SrSO4, CoFe2O4, La2O2SO4, and La2(SO4)3has the possibility to form on the surface and at the cathode/electrolyte interface as a result of SO2existence in the system. It is also investigated that degradation occurs more severe for La0.6Sr0.4Co0.2Fe0.8O3±d(LSCF-6428) comparing to LSCF-7328 and LSCF-8228, due to the formation of a higher amount of secondary phases, specifically SrSO4. The results demonstrate the effectiveness of the computational thermodynamic modeling in the prediction of interaction and performance stability of SOFC cathodes in the presence of contaminants. |
| first_indexed | 2025-11-14T10:55:42Z |
| format | Journal Article |
| id | curtin-20.500.11937-73197 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:55:42Z |
| publishDate | 2018 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-731972022-10-12T07:03:55Z Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 Darvish, S. Wang, C. Jiang, San Ping Zhong, Y. © 2018 Thermodynamic predictions and electrochemical analysis of secondary phase formation in SO2containing atmosphere on the surface of La1-xSrxCo0.2Fe0.8O3±d(x = 0.2–0.4) electrodes of solid oxide fuel cells have been carried out utilizing the CALculation of Phase Diagram (CALPHAD) approach. Impacts of temperature, SO2partial pressure, O2partial pressure as well as the cathode composition on the formation of secondary phases have been investigated and correlated with the previous investigations in the literature. The results predict that SrSO4, CoFe2O4, La2O2SO4, and La2(SO4)3has the possibility to form on the surface and at the cathode/electrolyte interface as a result of SO2existence in the system. It is also investigated that degradation occurs more severe for La0.6Sr0.4Co0.2Fe0.8O3±d(LSCF-6428) comparing to LSCF-7328 and LSCF-8228, due to the formation of a higher amount of secondary phases, specifically SrSO4. The results demonstrate the effectiveness of the computational thermodynamic modeling in the prediction of interaction and performance stability of SOFC cathodes in the presence of contaminants. 2018 Journal Article http://hdl.handle.net/20.500.11937/73197 10.1016/j.electacta.2018.04.039 http://purl.org/au-research/grants/arc/DP150102025 http://purl.org/au-research/grants/arc/DP150102044 Pergamon restricted |
| spellingShingle | Darvish, S. Wang, C. Jiang, San Ping Zhong, Y. Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 |
| title | Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 |
| title_full | Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 |
| title_fullStr | Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 |
| title_full_unstemmed | Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 |
| title_short | Thermodynamic stability mapping and electrochemical study of La1-xSrxCo0.2Fe0.8O3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of SO2 |
| title_sort | thermodynamic stability mapping and electrochemical study of la1-xsrxco0.2fe0.8o3±δ (x=0.2–0.4) as a cathode of solid oxide fuel cells in the presence of so2 |
| url | http://purl.org/au-research/grants/arc/DP150102025 http://purl.org/au-research/grants/arc/DP150102025 http://hdl.handle.net/20.500.11937/73197 |