Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy
Herein, Cr deposition and poisoning behavior at the commonly used (La0.6Sr0.4)(Co0.2Fe0.8)O3d (LSCF) electrode of solid oxide fuel cells (SOFCs) is investigated. Three-dimension (3D)microstructure evolution of the porous electrode caused by Cr deposition during the polarizationtest at 900 C in the p...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
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Elsevier Ltd
2014
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/45851 |
| _version_ | 1848757399622516736 |
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| author | Chen, X. Jin, C. Zhao, Ling Zhang, L. Guan, C. Wang, L. Song, Y. Wang, C. Wang, J. Jiang, San Ping |
| author_facet | Chen, X. Jin, C. Zhao, Ling Zhang, L. Guan, C. Wang, L. Song, Y. Wang, C. Wang, J. Jiang, San Ping |
| author_sort | Chen, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Herein, Cr deposition and poisoning behavior at the commonly used (La0.6Sr0.4)(Co0.2Fe0.8)O3d (LSCF) electrode of solid oxide fuel cells (SOFCs) is investigated. Three-dimension (3D)microstructure evolution of the porous electrode caused by Cr deposition during the polarizationtest at 900 C in the presence of a FeeCr metallic interconnect is characterized forthe first time using the transmission X-ray microscopy (TXM) technique. The resultsindicate that a layer of solid Cr deposits ~1.7 mm in thickness is formed on the electrodesurface, significantly reducing the linear porosity to ~2% in the surface region from ~25%in the bulk, which explains the retarded gas diffusion process at the LSCF electrode after Crdeposition. The well-established relationship between the macroscopic performancedegradation and the microstructure evolution confirms the promising application of TXMtechnique for in-depth study of the degradation phenomenon at the electrode of SOFCs. |
| first_indexed | 2025-11-14T09:27:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-45851 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:27:29Z |
| publishDate | 2014 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-458512017-09-13T14:25:26Z Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy Chen, X. Jin, C. Zhao, Ling Zhang, L. Guan, C. Wang, L. Song, Y. Wang, C. Wang, J. Jiang, San Ping 3D microstructure evolution Transmission X-ray microscopy Cr deposition and poisoning Solid oxide fuel cells Herein, Cr deposition and poisoning behavior at the commonly used (La0.6Sr0.4)(Co0.2Fe0.8)O3d (LSCF) electrode of solid oxide fuel cells (SOFCs) is investigated. Three-dimension (3D)microstructure evolution of the porous electrode caused by Cr deposition during the polarizationtest at 900 C in the presence of a FeeCr metallic interconnect is characterized forthe first time using the transmission X-ray microscopy (TXM) technique. The resultsindicate that a layer of solid Cr deposits ~1.7 mm in thickness is formed on the electrodesurface, significantly reducing the linear porosity to ~2% in the surface region from ~25%in the bulk, which explains the retarded gas diffusion process at the LSCF electrode after Crdeposition. The well-established relationship between the macroscopic performancedegradation and the microstructure evolution confirms the promising application of TXMtechnique for in-depth study of the degradation phenomenon at the electrode of SOFCs. 2014 Journal Article http://hdl.handle.net/20.500.11937/45851 10.1016/j.ijhydene.2014.07.112 Elsevier Ltd restricted |
| spellingShingle | 3D microstructure evolution Transmission X-ray microscopy Cr deposition and poisoning Solid oxide fuel cells Chen, X. Jin, C. Zhao, Ling Zhang, L. Guan, C. Wang, L. Song, Y. Wang, C. Wang, J. Jiang, San Ping Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy |
| title | Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy |
| title_full | Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy |
| title_fullStr | Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy |
| title_full_unstemmed | Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy |
| title_short | Study on the Cr deposition and poisoning phenomenon at (La0.6Sr0.4)(Co0.2Fe0.8)O3-d electrode of solid oxide fuel cells by transmission X-ray microscopy |
| title_sort | study on the cr deposition and poisoning phenomenon at (la0.6sr0.4)(co0.2fe0.8)o3-d electrode of solid oxide fuel cells by transmission x-ray microscopy |
| topic | 3D microstructure evolution Transmission X-ray microscopy Cr deposition and poisoning Solid oxide fuel cells |
| url | http://hdl.handle.net/20.500.11937/45851 |