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| Presentation | 2013-01-24 13:30 Evaluation method for SOFC electrolyte breakdown condition due to anode oxidation Yuri Tahara, Himeko Orui, Kimitaka Watanabe, Satoshi Sugita, Ryuichi Kobayashi (NTT)  EE2012-33 CPM2012-155 Link to ES Tech. Rep. Archives: CPM2012-155 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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($O_{2}$),a)), and this leads to electrolyte breakdown due to anode volume expansion. In this study, in order to clarify the temperature and (p($O_{2}$),a) conditions under which electrolyte is broken by anode oxidation, we examined how to detect (p($O_{2}$),a) and electrolyte breakdown condition. We found that (p($O_{2}$),a) can be controlled from $2.0\times 10^{-1}$ to $6.6\times 10^{-6}$atm by the $N_{2}$ flow rate and the $N_{2}$ to $O_{2}$ flow rate ratio, and (p($O_{2}$),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($O_{2}$),a)’s and temperatures and we could find the electrolyte breakdown condition in an anode-supported cell. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Solid Oxide Fuel Cell / anode / partial pressure of oxygen / breakdown / volume expansion / redox / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 397, CPM2012-155, pp. 29-34, Jan. 2013. | |
| Paper # | CPM2012-155 | |
| Date of Issue | 2013-01-17 (EE, CPM) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | EE2012-33 CPM2012-155 Link to ES Tech. Rep. Archives: CPM2012-155 |
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| Conference Information | |
| Committee | EE CPM |
| Conference Date | 2013-01-24 - 2013-01-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | CPM |
| Conference Code | 2013-01-EE-CPM |
| Language | Japanese |
| 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 |
| Keyword(2) | anode |
| Keyword(3) | partial pressure of oxygen |
| Keyword(4) | breakdown |
| Keyword(5) | volume expansion |
| Keyword(6) | redox |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuri Tahara |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 2nd Author's Name | Himeko Orui |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 3rd Author's Name | Kimitaka Watanabe |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 4th Author's Name | Satoshi Sugita |
| 4th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 5th Author's Name | Ryuichi Kobayashi |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2013-01-24 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | CPM |
| Paper # | EE2012-33, CPM2012-155 |
| Volume (vol) | vol.112 |
| Number (no) | no.396(EE), no.397(CPM) |
| Page | pp.29-34 |
| #Pages | 6 |
| Date of Issue | 2013-01-17 (EE, CPM) |
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