Degradation behavior of anode-supported solid oxide fuel cell using LNF cathode as function of current load
| Autor: | Yoshiteru Yoshida, Hajime Arai, Takeshi Komatsu, Chiba Reiichi, Himeko Orui, Taguchi Hiroaki, Kimitaka Watanabe |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Scanning electron microscope Analytical chemistry Energy Engineering and Power Technology Electrolyte Cermet Cathode law.invention Anode law Transmission electron microscopy Solid oxide fuel cell Electrical and Electronic Engineering Physical and Theoretical Chemistry Composite material Ohmic contact |
| Zdroj: | Journal of Power Sources. 195:5601-5605 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2010.03.078 |
| Popis: | We investigated the effect of current loading on the degradation behavior of an anode-supported solid oxide fuel cell (SOFC). The cell consisted of LaNi 0.6 Fe 0.4 O 3 (LNF), alumina-doped scandia stabilized zirconia (SASZ), and a Ni-SASZ cermet as the cathode, electrolyte, and anode, respectively. The test was carried out at 1073 K with constant loads of 0.3, 1.0, 1.5, and 2.3 A cm −2 . The degradation rate, defined by the voltage loss during a fixed period (about 1000 h), was faster at higher current densities. From an impedance analysis, the degradation depended mainly on increases in the cathodic resistance, while the anodic and ohmic resistances contributed very little. The cathode microstructures were observed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). |
| Databáze: | OpenAIRE |
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