| DOI | Trouver le DOI : https://doi.org/10.1016/j.jpowsour.2007.10.002 |
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| Auteur | Rechercher : Wang, Zhenwei1; Rechercher : Berghaus, Jörg Oberste; Rechercher : Yick, Sing1; Rechercher : Decès-Petit, Cyrille1; Rechercher : Qu, Wei1; Rechercher : Hui, Rob1; Rechercher : Maric, Radenka1; Rechercher : Ghosh, Dave1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut d'innovation en piles à combustible du CNRC
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| Format | Texte, Article |
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| Sujet | solid oxide fuel cell; metal-supported; low-temperature; dynamic evaluation; plasma spray |
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| Résumé | A metal-supported solid oxide fuel cell (SOFC) composed of a Ni–Ce0.8Sm0.2O2−δ (Ni–SDC) cermet anode and an SDC electrolyte was fabricated by suspension plasma spraying on a Hastelloy X substrate. The cathode, an Sm0.5Sr0.5CoO3 (SSCo)–SDC composite, was screen-printed and fired in situ. The dynamic behaviour of the cell was measured while subjected to complete fuel shutoff and rapid start-up cycles, as typically encountered in auxiliary power units (APU) applications. A promising performance – with a maximum power density (MPD) of 0.176 W cm−2 at 600 °C – was achieved using humidified hydrogen as fuel and air as the oxidant. The cell also showed excellent resistance to oxidation at 600 °C during fuel shutoff, with only a slight drop in performance after reintroduction of the fuel. The Cr and Mn species in the Hastelloy X alloy appeared to be preferentially oxidized while the oxidation of nickel in the metallic substrate was temporarily alleviated. In rapid start-up cycles with a heating rate of 60 °C min−1, noticeable performance deterioration took place in the first two thermal cycles, and then continued at a much slower rate in subsequent cycles. A postmortem analysis of the cell suggested that the degradation was mainly due to the mismatch of the thermal expansion coefficient across the cathode/electrolyte interface. |
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| Date de publication | 2008-01-21 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 8901218 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 86705f5f-e456-499f-b849-9190a7eda41a |
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| Enregistrement créé | 2009-04-22 |
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| Enregistrement modifié | 2023-06-26 |
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