| Presentation | 2013-01-24 Evaluation method for SOFC electrolyte breakdown condition due to anode oxidation Yuri TAHARA, Himeko ORUI, Kimitaka WATANABE, Satoshi SUGITA, Ryuichi KOBAYASHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ni-Zirconia cermet is a common material of solid oxide fuel cell (SOFC) anode. It is normally used under reducing atmosphere, but an emergency shutdown of an SOFC system gives rise to an increase of anode-side partial pressure of oxygen ((p(02), a)), and this leads to electrolyte breakdown due to anode volume expansion. In this study, in order to clarify the temperature and (p(02), a) conditions under which electrolyte is broken by anode oxidation, we examined how to detect (p(02), a) and electrolyte breakdown condition. We found that (p(02), a) can be controlled from 2 0 X 10 1 to 6 6 X 106 atm by the N2 flow rate and the N2 to 02 flow rate ratio, and (p(02), a) should be decided by the gas flow rate when using an electrolyte-supported cell. Then, we determined the open circuit voltage recovery and drop conditions at various (p(02), a)'s and temperatures and we could find the electrolyte breakdown condition in an anode-supported cell. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Solid Oxide Fuel Cell (SOFC) / anode / redox / volume expansion / breakdown / partial pressure of oxygen |
| Paper # | EE2012-33,CPM2012-155 |
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| Conference Information | |
| Committee | EE |
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| Conference Date | 2013/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Energy Engineering in Electronics and Communications (EE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation method for SOFC electrolyte breakdown condition due to anode oxidation |
| Sub Title (in English) | |
| Keyword(1) | Solid Oxide Fuel Cell (SOFC) |
| Keyword(2) | anode |
| Keyword(3) | redox |
| Keyword(4) | volume expansion |
| Keyword(5) | breakdown |
| Keyword(6) | partial pressure of oxygen |
| 1st Author's Name | Yuri TAHARA |
| 1st Author's Affiliation | NTT Energy and Environment Systems Laboratories, Nippon Telegraph and Telephone Corporation() |
| 2nd Author's Name | Himeko ORUI |
| 2nd Author's Affiliation | / |
| 3rd Author's Name | Kimitaka WATANABE |
| 3rd Author's Affiliation | / |
| 4th Author's Name | Satoshi SUGITA |
| 4th Author's Affiliation | |
| 5th Author's Name | Ryuichi KOBAYASHI |
| 5th Author's Affiliation | |
| Date | 2013-01-24 |
| Paper # | EE2012-33,CPM2012-155 |
| Volume (vol) | vol.112 |
| Number (no) | 396 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |