Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells
Sr2Fe1.5Mo0.5O6−δ (SFM) perovskite is carefully investigated as an anode material for solid oxide fuel cells with LaGaO3-based electrolytes. Its electronic conductivity under anodic atmosphere is measured with four-probe method while its ionic conductivity is determined with oxygen permeation measur...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
The Electrochemical Society, Inc
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/5305 |
| _version_ | 1848744760112578560 |
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| author | He, Beibei Zhao, Ling Song, S. Liu, T. Chen, F. Xia, C. |
| author_facet | He, Beibei Zhao, Ling Song, S. Liu, T. Chen, F. Xia, C. |
| author_sort | He, Beibei |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Sr2Fe1.5Mo0.5O6−δ (SFM) perovskite is carefully investigated as an anode material for solid oxide fuel cells with LaGaO3-based electrolytes. Its electronic conductivity under anodic atmosphere is measured with four-probe method while its ionic conductivity is determined with oxygen permeation measurement. Samaria doped ceria (SDC) is incorporated into SFM electrode to improve the anodic performance. A strong relation is observed between SDC addition and polarization losses, suggesting that the internal SFM-SDC contacts are active for H2 oxidation. The best electrode performance is achieved for the composite with 30 wt% SDC addition, resulting in an interfacial polarization resistance of 0.258 Ω cm2 at 700°C for La0.8Sr0.2Ga0.8Mg0.2O3−δ supported single cells. Electrochemical impedance spectroscopy analysis indicates that the high performance of SFM-SDC composite anodes is likely due to the high ionic conductivity and electro-catalytic activity of SDC by promoting the ionic exchange processes. Redox cycle treatment shows that SDC addition can even improve the redox tolerance of SFM anodes. |
| first_indexed | 2025-11-14T06:06:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-5305 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:06:35Z |
| publishDate | 2012 |
| publisher | The Electrochemical Society, Inc |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-53052017-09-13T14:42:51Z Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells He, Beibei Zhao, Ling Song, S. Liu, T. Chen, F. Xia, C. Sr2Fe1.5Mo0.5O6−δ (SFM) perovskite is carefully investigated as an anode material for solid oxide fuel cells with LaGaO3-based electrolytes. Its electronic conductivity under anodic atmosphere is measured with four-probe method while its ionic conductivity is determined with oxygen permeation measurement. Samaria doped ceria (SDC) is incorporated into SFM electrode to improve the anodic performance. A strong relation is observed between SDC addition and polarization losses, suggesting that the internal SFM-SDC contacts are active for H2 oxidation. The best electrode performance is achieved for the composite with 30 wt% SDC addition, resulting in an interfacial polarization resistance of 0.258 Ω cm2 at 700°C for La0.8Sr0.2Ga0.8Mg0.2O3−δ supported single cells. Electrochemical impedance spectroscopy analysis indicates that the high performance of SFM-SDC composite anodes is likely due to the high ionic conductivity and electro-catalytic activity of SDC by promoting the ionic exchange processes. Redox cycle treatment shows that SDC addition can even improve the redox tolerance of SFM anodes. 2012 Journal Article http://hdl.handle.net/20.500.11937/5305 10.1149/2.020206jes The Electrochemical Society, Inc restricted |
| spellingShingle | He, Beibei Zhao, Ling Song, S. Liu, T. Chen, F. Xia, C. Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells |
| title | Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_full | Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_fullStr | Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_full_unstemmed | Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_short | Sr2Fe1.5Mo0.5O6-δ - Sm0.2Ce0.8O1.9 Composite Anodes for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_sort | sr2fe1.5mo0.5o6-δ - sm0.2ce0.8o1.9 composite anodes for intermediate-temperature solid oxide fuel cells |
| url | http://hdl.handle.net/20.500.11937/5305 |