Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte
Perovskite-type La0.8Sr0.2ScyMn 1-yO3-d oxides (LSSMy, y=0.0-0.2) were synthesized and investigated as cathodes for solid-oxide fuel cells (SOFCs) containing a stabilized zirconia electrolyte. The introduction of Sc3+ into the B-site of La0.8Sr0.2MnO3-d (LSM) led to a decrease in the oxides' th...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier SA
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/12200 |
| _version_ | 1848748011957518336 |
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| author | Gu, H. Zheng, Y. Ran, R. Shao, Zongping Jin, W. Xu, N. Ahn, J. |
| author_facet | Gu, H. Zheng, Y. Ran, R. Shao, Zongping Jin, W. Xu, N. Ahn, J. |
| author_sort | Gu, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Perovskite-type La0.8Sr0.2ScyMn 1-yO3-d oxides (LSSMy, y=0.0-0.2) were synthesized and investigated as cathodes for solid-oxide fuel cells (SOFCs) containing a stabilized zirconia electrolyte. The introduction of Sc3+ into the B-site of La0.8Sr0.2MnO3-d (LSM) led to a decrease in the oxides' thermal expansion coefficients and electrical conductivities. Among the various LSSMy oxides tested, LSSM0.05 possessed the smallest area-specific cathodic polarization resistance, as a result of the suppressive effect of Sc3+ on surface SrO segregation and the optimization of the concentration of surface oxygen vacancies. At 850°C, it was only ~0.094Ocm2 after a current passage of 400mA cm-2 for 30 min, significantly lower than that of LSM (~0.25 O cm2). An anode-supported cell with a LSSM0.05 cathode demonstrated a peak power density of 1300mWcm-2 at 850°C. The corresponding value for the cell with LSM cathode was 450mWcm-2 under the same conditions. The LSSM0.05 oxide may potentially be a good cathode material for IT-SOFCs containing doped zirconia electrolytes. © 2008 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T06:58:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-12200 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:58:16Z |
| publishDate | 2008 |
| publisher | Elsevier SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-122002017-09-13T14:57:34Z Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte Gu, H. Zheng, Y. Ran, R. Shao, Zongping Jin, W. Xu, N. Ahn, J. Perovskite-type La0.8Sr0.2ScyMn 1-yO3-d oxides (LSSMy, y=0.0-0.2) were synthesized and investigated as cathodes for solid-oxide fuel cells (SOFCs) containing a stabilized zirconia electrolyte. The introduction of Sc3+ into the B-site of La0.8Sr0.2MnO3-d (LSM) led to a decrease in the oxides' thermal expansion coefficients and electrical conductivities. Among the various LSSMy oxides tested, LSSM0.05 possessed the smallest area-specific cathodic polarization resistance, as a result of the suppressive effect of Sc3+ on surface SrO segregation and the optimization of the concentration of surface oxygen vacancies. At 850°C, it was only ~0.094Ocm2 after a current passage of 400mA cm-2 for 30 min, significantly lower than that of LSM (~0.25 O cm2). An anode-supported cell with a LSSM0.05 cathode demonstrated a peak power density of 1300mWcm-2 at 850°C. The corresponding value for the cell with LSM cathode was 450mWcm-2 under the same conditions. The LSSM0.05 oxide may potentially be a good cathode material for IT-SOFCs containing doped zirconia electrolytes. © 2008 Elsevier B.V. All rights reserved. 2008 Journal Article http://hdl.handle.net/20.500.11937/12200 10.1016/j.jpowsour.2008.05.053 Elsevier SA restricted |
| spellingShingle | Gu, H. Zheng, Y. Ran, R. Shao, Zongping Jin, W. Xu, N. Ahn, J. Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| title | Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| title_full | Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| title_fullStr | Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| title_full_unstemmed | Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| title_short | Synthesis and assessment of la0.8Sr0.2Sc yMn1-yO3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| title_sort | synthesis and assessment of la0.8sr0.2sc ymn1-yo3-d as cathodes for solid-oxide fuel cells on scandium-stabilized zirconia electrolyte |
| url | http://hdl.handle.net/20.500.11937/12200 |