A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c
The slow activity of cathode materials is one of the most significant barriers to realizing the operation of solid oxide fuel cells below 500 °C. Here we report a niobium and tantalum co-substituted perovskite SrCo0.8Nb0.1Ta0.1O3-d as a cathode, which exhibits high electroactivity. This cathode has...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Macmillan Publishers Limited
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/29218 |
| _version_ | 1848752745213853696 |
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| author | Li, M. Zhao, M. Li, F. Zhou, W. Peterson, V. Xu, X. Shao, Zongping Gentle, I. Zhu, Z. |
| author_facet | Li, M. Zhao, M. Li, F. Zhou, W. Peterson, V. Xu, X. Shao, Zongping Gentle, I. Zhu, Z. |
| author_sort | Li, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The slow activity of cathode materials is one of the most significant barriers to realizing the operation of solid oxide fuel cells below 500 °C. Here we report a niobium and tantalum co-substituted perovskite SrCo0.8Nb0.1Ta0.1O3-d as a cathode, which exhibits high electroactivity. This cathode has an area-specific polarization resistance as low as ~0.16 and ~0.68 Ocm2 in a symmetrical cell and peak power densities of 1.2 and 0.7 W cm-2 in a Gd0.1Ce0.9O1.95-based anode-supported fuel cell at 500 and 450 °C, respectively. The high performance is attributed to an optimal balance of oxygen vacancies, ionic mobility and surface electron transfer as promoted by the synergistic effects of the niobium and tantalum. This work also points to an effective strategy in the design of cathodes for low-temperature solid oxide fuel cells. |
| first_indexed | 2025-11-14T08:13:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-29218 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:13:30Z |
| publishDate | 2017 |
| publisher | Macmillan Publishers Limited |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-292182017-09-13T15:23:29Z A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c Li, M. Zhao, M. Li, F. Zhou, W. Peterson, V. Xu, X. Shao, Zongping Gentle, I. Zhu, Z. The slow activity of cathode materials is one of the most significant barriers to realizing the operation of solid oxide fuel cells below 500 °C. Here we report a niobium and tantalum co-substituted perovskite SrCo0.8Nb0.1Ta0.1O3-d as a cathode, which exhibits high electroactivity. This cathode has an area-specific polarization resistance as low as ~0.16 and ~0.68 Ocm2 in a symmetrical cell and peak power densities of 1.2 and 0.7 W cm-2 in a Gd0.1Ce0.9O1.95-based anode-supported fuel cell at 500 and 450 °C, respectively. The high performance is attributed to an optimal balance of oxygen vacancies, ionic mobility and surface electron transfer as promoted by the synergistic effects of the niobium and tantalum. This work also points to an effective strategy in the design of cathodes for low-temperature solid oxide fuel cells. 2017 Journal Article http://hdl.handle.net/20.500.11937/29218 10.1038/ncomms13990 http://creativecommons.org/licenses/by/4.0/ Macmillan Publishers Limited fulltext |
| spellingShingle | Li, M. Zhao, M. Li, F. Zhou, W. Peterson, V. Xu, X. Shao, Zongping Gentle, I. Zhu, Z. A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| title | A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| title_full | A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| title_fullStr | A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| title_full_unstemmed | A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| title_short | A niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| title_sort | niobium and tantalum co-doped perovskite cathode for solid oxide fuel cells operating below 500 °c |
| url | http://hdl.handle.net/20.500.11937/29218 |