New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity
Ba0.5Sr0.5Co0.8Fe0.2O 3-d (BSCF) + Co3O4 composites with different Co3O4 contents were synthesized, and their properties and performance as cathodes in IT-SOFCs were investigated. The diffraction patterns of the composites were well indexed based on the physical mixture of the BSCF phase and the Co3...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/5231 |
| _version_ | 1848744738331557888 |
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| author | Chen, D. Huang, C. Ran, R. Park, H. Kwak, C. Shao, Zongping |
| author_facet | Chen, D. Huang, C. Ran, R. Park, H. Kwak, C. Shao, Zongping |
| author_sort | Chen, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Ba0.5Sr0.5Co0.8Fe0.2O 3-d (BSCF) + Co3O4 composites with different Co3O4 contents were synthesized, and their properties and performance as cathodes in IT-SOFCs were investigated. The diffraction patterns of the composites were well indexed based on the physical mixture of the BSCF phase and the Co3O4 phase. A surprising increase in the total conductivity of the composites was observed even though Co3O4 is a p-type semiconductor with a low conductivity. Electrochemical impedance spectra of symmetric cells indicated that both the area specific resistance and the activation energy were reduced in samples with Co3O4 contents of 5-20 wt.% with minimum values reaching 10 wt.%. A synergistic effect likely occurred between BSCF and Co3O4 that led to the better performance. An anode-supported single cell with 90 wt.% BSCF + 10 wt.% Co3O 4 delivered a promising peak power density of 1150 mW cm - 2 at 600 °C. © 2011 Elsevier B.V. |
| first_indexed | 2025-11-14T06:06:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-5231 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:06:14Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-52312017-09-13T14:44:36Z New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity Chen, D. Huang, C. Ran, R. Park, H. Kwak, C. Shao, Zongping Ba0.5Sr0.5Co0.8Fe0.2O 3-d (BSCF) + Co3O4 composites with different Co3O4 contents were synthesized, and their properties and performance as cathodes in IT-SOFCs were investigated. The diffraction patterns of the composites were well indexed based on the physical mixture of the BSCF phase and the Co3O4 phase. A surprising increase in the total conductivity of the composites was observed even though Co3O4 is a p-type semiconductor with a low conductivity. Electrochemical impedance spectra of symmetric cells indicated that both the area specific resistance and the activation energy were reduced in samples with Co3O4 contents of 5-20 wt.% with minimum values reaching 10 wt.%. A synergistic effect likely occurred between BSCF and Co3O4 that led to the better performance. An anode-supported single cell with 90 wt.% BSCF + 10 wt.% Co3O 4 delivered a promising peak power density of 1150 mW cm - 2 at 600 °C. © 2011 Elsevier B.V. 2011 Journal Article http://hdl.handle.net/20.500.11937/5231 10.1016/j.elecom.2010.12.012 restricted |
| spellingShingle | Chen, D. Huang, C. Ran, R. Park, H. Kwak, C. Shao, Zongping New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity |
| title | New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity |
| title_full | New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity |
| title_fullStr | New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity |
| title_full_unstemmed | New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity |
| title_short | New Ba0.5Sr0.5Co0.8Fe0.2O 3-d + Co3O4 composite electrode for IT-SOFCs with improved electrical conductivity and catalytic activity |
| title_sort | new ba0.5sr0.5co0.8fe0.2o 3-d + co3o4 composite electrode for it-sofcs with improved electrical conductivity and catalytic activity |
| url | http://hdl.handle.net/20.500.11937/5231 |