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Deposition of Cr Species at ( La , Sr ) ( Co , Fe ) O3 Cathodes of Solid Oxide Fuel Cells
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jiang, San Ping Zhang, Sam Zhen, Y. D. |
| Copyright Year | 2006 |
| Abstract | Deposition process of Cr species at the (La,Sr)(Co,Fe)O 3 (LSCF) electrode and Gd 0 . 2 Ce 0 . 8 O 2 (GDC) electrolyte system is investigated under the O 2 reduction conditions in the presence of a Fe-Cr alloy interconnect for solid oxide fuel cells. Deposition of Cr species preferentially occurs on the surface of the LSCF electrode with and without the cathodic polarization at 900°C, forming SrCrO 4 and Cr 2 O 3 phase. At the initial stage of the reaction, Cr deposition was not detected inside the LSCF electrode or at the LSCF electrode/GDC electrolyte interface. Deposition of Cr species on the LSCF electrode surface under the rib of Fe-Cr alloy interconnect is substantial in comparison to that under the channel of the interconnect. The results demonstrate clearly that the deposition of Cr species at the LSCF electrode is essentially a chemical reaction and is kinetically controlled by nucleation reaction between the gaseous Cr species and SrO-enriched/segregated on the LSCF electrode surface. |
| File Format | PDF HTM / HTML |
| DOI | 10.1149/1.2136077 |
| Alternate Webpage(s) | http://www3.ntu.edu.sg/ThinFilms/mae-thinfilms/Thinfilms/pdfpapers/JECS153-2006.pdf |
| Alternate Webpage(s) | https://doi.org/10.1149/1.2136077 |
| Volume Number | 153 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
