| Autor: |
Takashi Ozeki, Toshiaki Matsui, Tomoki Fujinaga, Koichi Eguchi, Hiroki Muroyama, Ritsuki Shimizu |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
ECS Meeting Abstracts. :107-107 |
| ISSN: |
2151-2043 |
| DOI: |
10.1149/ma2021-031107mtgabs |
| Popis: |
High energy conversion efficiency in solid oxide fuel cell (SOFC) systems can be achieved by improving the fuel utilization. However, when the SOFCs are operated under high fuel utilization, the downstream part of the anode is exposed to high steam concentration and hence high P(O2) atmospheres, and this has a negative impact on the stability of Ni-based cermet anodes. At this stage, no reports dealt with the degradation phenomena of the anode under such severe conditions. In this study, we aimed to clarify degradation phenomena at the downstream part of practical cells operated at high fuel utilizations by using bottom cells. Fuel gases that simulated severe conditions were supplied to single cells. The change in electrochemical properties was monitored during discharge operation, and the microstructural evolution of the anode was quantitatively analyzed by the FIB–SEM technique. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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