A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture
As candidates of cathode materials for single-chamber solid oxide fuel cells, La0.8Sr0.2MnO3 (LSM) and La0.8Sr0.2Sc0.1Mn0.9O3 (LSSM) were synthesized by a combined EDTA-citrate complexing sol-gel process. The solid precursors of LSM and LSSM were calcined at 1000 and 1150 °C, respectively, to obtain...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Elsevier SA
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/44703 |
| _version_ | 1848757077958197248 |
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| author | Zhang, C. Zheng, Y. Lin, Y. Ran, R. Shao, Zongping Farrusseng, D. |
| author_facet | Zhang, C. Zheng, Y. Lin, Y. Ran, R. Shao, Zongping Farrusseng, D. |
| author_sort | Zhang, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | As candidates of cathode materials for single-chamber solid oxide fuel cells, La0.8Sr0.2MnO3 (LSM) and La0.8Sr0.2Sc0.1Mn0.9O3 (LSSM) were synthesized by a combined EDTA-citrate complexing sol-gel process. The solid precursors of LSM and LSSM were calcined at 1000 and 1150 °C, respectively, to obtain products with similar specific surface area. LSSM was found to have higher activity for methane oxidization than LSM due to LSSM's higher catalytic activity for oxygen reduction. Single cells with these two cathodes initialized by ex situ reduction had similar peak power densities of around 220 mW cm-2 at 825 °C. The cell using the LSM cathode showed higher open-circuit-voltage (OCV) at corresponding temperatures due to its reduced activity for methane oxidation relative to LSSM. A negligible effect of methane and CO2 on the cathode performance was observed for both LSM and LSSM via electrochemical impedance spectroscopy analysis. The high phase stability of LSSM under reducing atmosphere allows a more convenient in situ reduction for fuel cell initiation. The resultant cell with LSSM cathode delivered a peak power density of ~200 mW cm-2 at 825 °C, comparable to that from ex situ reduction. © 2009 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T09:22:22Z |
| format | Journal Article |
| id | curtin-20.500.11937-44703 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:22:22Z |
| publishDate | 2009 |
| publisher | Elsevier SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-447032017-09-13T14:09:29Z A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture Zhang, C. Zheng, Y. Lin, Y. Ran, R. Shao, Zongping Farrusseng, D. As candidates of cathode materials for single-chamber solid oxide fuel cells, La0.8Sr0.2MnO3 (LSM) and La0.8Sr0.2Sc0.1Mn0.9O3 (LSSM) were synthesized by a combined EDTA-citrate complexing sol-gel process. The solid precursors of LSM and LSSM were calcined at 1000 and 1150 °C, respectively, to obtain products with similar specific surface area. LSSM was found to have higher activity for methane oxidization than LSM due to LSSM's higher catalytic activity for oxygen reduction. Single cells with these two cathodes initialized by ex situ reduction had similar peak power densities of around 220 mW cm-2 at 825 °C. The cell using the LSM cathode showed higher open-circuit-voltage (OCV) at corresponding temperatures due to its reduced activity for methane oxidation relative to LSSM. A negligible effect of methane and CO2 on the cathode performance was observed for both LSM and LSSM via electrochemical impedance spectroscopy analysis. The high phase stability of LSSM under reducing atmosphere allows a more convenient in situ reduction for fuel cell initiation. The resultant cell with LSSM cathode delivered a peak power density of ~200 mW cm-2 at 825 °C, comparable to that from ex situ reduction. © 2009 Elsevier B.V. All rights reserved. 2009 Journal Article http://hdl.handle.net/20.500.11937/44703 10.1016/j.jpowsour.2009.02.043 Elsevier SA restricted |
| spellingShingle | Zhang, C. Zheng, Y. Lin, Y. Ran, R. Shao, Zongping Farrusseng, D. A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture |
| title | A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture |
| title_full | A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture |
| title_fullStr | A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture |
| title_full_unstemmed | A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture |
| title_short | A comparative study of La0.8Sr0.2MnO3 and La0.8Sr0.2Sc0.1Mn0.9O3 as cathode materials of single-chamber SOFCs operating on a methane-air mixture |
| title_sort | comparative study of la0.8sr0.2mno3 and la0.8sr0.2sc0.1mn0.9o3 as cathode materials of single-chamber sofcs operating on a methane-air mixture |
| url | http://hdl.handle.net/20.500.11937/44703 |