Cr-poisoning under open-circuit condition in LaNi0.6Fe0.4O3–δ-based nano composite cathodes for solid oxide fuel cells prepared by infiltration process
| Autor: | Jeong-Uk Seo, Kyoung-Jin Lee, Yeong-Ju Choe, Min-Jin Lee, Hae-Jin Hwang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Nanocomposite Open-circuit voltage Inorganic chemistry Metals and Alloys Oxide Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Electrochemistry 01 natural sciences Cathode 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Materials Chemistry Solid oxide fuel cell 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 26:1367-1372 |
| ISSN: | 1003-6326 |
| Popis: | LaNi 0.6 Fe 0.4 O 3– δ (LNF) powders were synthesized by the glycine–nitrate process and LNF-gadolinium-doped ceria (GDC) nanocomposite cathodes for solid oxide fuel cells (SOFCs) were fabricated by infiltration from LNF porous backbones. Electrochemical properties and Cr-poisoning behavior of LNF–GDC cathodes were studied. Single phase perovskite LNF could be obtained at the glycine to nitrate molar ratio of 1:1. The polarization resistance of the LNF–GDC nanocomposite cathode was significantly decreased in comparison with the LNF. This phenomenon was associated with enhanced catalytic activity and enlarged triple-phase boundary (TPB) length by GDC nano particles. In addition, the nanocomposite cathode showed good Cr tolerance under open circuit condition. The LNF–GDC nanocomposite cathodes were expected for use as a potential cathode in intermediate- temperature solid oxide fuel cells (IT-SOFC). |
| Databáze: | OpenAIRE |
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