Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells
In this study, we investigate a cobalt-free titanium-doped perovskite oxide with the nominal composition of Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ (BSFCuTi) as a potential electrode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). In comparison to Ba0.5Sr0.5Fe0.9Cu0.1O3−δ, BSFCuTi exh...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Elsevier
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/36348 |
| _version_ | 1848754744188731392 |
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| author | Yang, G. Shen, J. Chen, Y. Tadé, M. Shao, Zongping |
| author_facet | Yang, G. Shen, J. Chen, Y. Tadé, M. Shao, Zongping |
| author_sort | Yang, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this study, we investigate a cobalt-free titanium-doped perovskite oxide with the nominal composition of Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ (BSFCuTi) as a potential electrode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). In comparison to Ba0.5Sr0.5Fe0.9Cu0.1O3−δ, BSFCuTi exhibits improved phase stability and a reduced thermal expansion coefficient even though the electrical conductivity decreases. A low area specific resistance of 0.088 Ω cm2 is achieved at 600 °C based on a symmetrical cell test, which is comparable to the result for the benchmark Ba0.5Sr0.5Co0.8Fe0.2O3−δ cobalt-based perovskite electrocatalyst. Stable operation for a period of 200 h is also demonstrated. The I–V test shows a very high power output of 1.16 W cm−2 for a single cell using a BSFCuTi cathode at 600 °C. In addition, the BSFCuTi can be partially reduced under a reducing atmosphere to prepare a suitable anode material. A cell with BSFCuTi as the material for both electrodes and a thick Gd0.2Ce0.8O1.9 electrolyte (300 μm) delivers an attractive power density of 480 mW cm−2 at 800 °C. The high activity, favorable stability and bi-functionality make BSFCuTi a promising electrode material for IT-SOFCs. |
| first_indexed | 2025-11-14T08:45:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-36348 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:45:16Z |
| publishDate | 2015 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-363482017-09-13T15:23:54Z Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells Yang, G. Shen, J. Chen, Y. Tadé, M. Shao, Zongping In this study, we investigate a cobalt-free titanium-doped perovskite oxide with the nominal composition of Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ (BSFCuTi) as a potential electrode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). In comparison to Ba0.5Sr0.5Fe0.9Cu0.1O3−δ, BSFCuTi exhibits improved phase stability and a reduced thermal expansion coefficient even though the electrical conductivity decreases. A low area specific resistance of 0.088 Ω cm2 is achieved at 600 °C based on a symmetrical cell test, which is comparable to the result for the benchmark Ba0.5Sr0.5Co0.8Fe0.2O3−δ cobalt-based perovskite electrocatalyst. Stable operation for a period of 200 h is also demonstrated. The I–V test shows a very high power output of 1.16 W cm−2 for a single cell using a BSFCuTi cathode at 600 °C. In addition, the BSFCuTi can be partially reduced under a reducing atmosphere to prepare a suitable anode material. A cell with BSFCuTi as the material for both electrodes and a thick Gd0.2Ce0.8O1.9 electrolyte (300 μm) delivers an attractive power density of 480 mW cm−2 at 800 °C. The high activity, favorable stability and bi-functionality make BSFCuTi a promising electrode material for IT-SOFCs. 2015 Journal Article http://hdl.handle.net/20.500.11937/36348 10.1016/j.jpowsour.2015.08.064 Elsevier restricted |
| spellingShingle | Yang, G. Shen, J. Chen, Y. Tadé, M. Shao, Zongping Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells |
| title | Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells |
| title_full | Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells |
| title_fullStr | Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells |
| title_full_unstemmed | Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells |
| title_short | Cobalt-free Ba0.5Sr0.5Fe0.8Cu0.1Ti0.1O3−δ as a bi-functional electrode material for solid oxide fuel cells |
| title_sort | cobalt-free ba0.5sr0.5fe0.8cu0.1ti0.1o3−δ as a bi-functional electrode material for solid oxide fuel cells |
| url | http://hdl.handle.net/20.500.11937/36348 |