Abstract
In the downstream of SOFC systems, higher oxygen partial pressure can cause oxidation-induced Ni anode degradation. In this study, we have investigated cell performance at high fuel utilizations for simulating situations around the system downstream. When the anode voltage was higher than a voltage threshold, the cell performance was stable. On the other hand, it became unstable associated with cell voltage oscillation when anode voltage was around or less than the threshold value. The threshold value was consistent with the anode potential derived from the oxygen partial pressure at the phase boundary at which both Ni and NiO coexist.
| Original language | English |
|---|---|
| Title of host publication | Solid Oxide Fuel Cells 14, SOFC 2015 |
| Editors | K. Eguchi, S. C. Singhal |
| Publisher | Electrochemical Society Inc. |
| Pages | 1345-1352 |
| Number of pages | 8 |
| Edition | 1 |
| ISBN (Electronic) | 9781607685395 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
| Event | 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom Duration: Jul 26 2015 → Jul 31 2015 |
Publication series
| Name | ECS Transactions |
|---|---|
| Number | 1 |
| Volume | 68 |
| ISSN (Print) | 1938-5862 |
| ISSN (Electronic) | 1938-6737 |
Other
| Other | 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage |
|---|---|
| Country | United Kingdom |
| City | Glasgow |
| Period | 7/26/15 → 7/31/15 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Oxidation-induced degradation of SOFC Ni anodes at high fuel utilizations. / Kawasaki, T.; Sugimoto, J.; Tachikawa, Yuya; Shiratori, Yusuke; Taniguchi, Shunsuke; Sasaki, Kazunari.
Solid Oxide Fuel Cells 14, SOFC 2015. ed. / K. Eguchi; S. C. Singhal. 1. ed. Electrochemical Society Inc., 2015. p. 1345-1352 (ECS Transactions; Vol. 68, No. 1).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Oxidation-induced degradation of SOFC Ni anodes at high fuel utilizations
AU - Kawasaki, T.
AU - Sugimoto, J.
AU - Tachikawa, Yuya
AU - Shiratori, Yusuke
AU - Taniguchi, Shunsuke
AU - Sasaki, Kazunari
PY - 2015/1/1
Y1 - 2015/1/1
N2 - In the downstream of SOFC systems, higher oxygen partial pressure can cause oxidation-induced Ni anode degradation. In this study, we have investigated cell performance at high fuel utilizations for simulating situations around the system downstream. When the anode voltage was higher than a voltage threshold, the cell performance was stable. On the other hand, it became unstable associated with cell voltage oscillation when anode voltage was around or less than the threshold value. The threshold value was consistent with the anode potential derived from the oxygen partial pressure at the phase boundary at which both Ni and NiO coexist.
AB - In the downstream of SOFC systems, higher oxygen partial pressure can cause oxidation-induced Ni anode degradation. In this study, we have investigated cell performance at high fuel utilizations for simulating situations around the system downstream. When the anode voltage was higher than a voltage threshold, the cell performance was stable. On the other hand, it became unstable associated with cell voltage oscillation when anode voltage was around or less than the threshold value. The threshold value was consistent with the anode potential derived from the oxygen partial pressure at the phase boundary at which both Ni and NiO coexist.
UR - http://www.scopus.com/inward/record.url?scp=84938802801&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938802801&partnerID=8YFLogxK
U2 - 10.1149/06801.1345ecst
DO - 10.1149/06801.1345ecst
M3 - Conference contribution
AN - SCOPUS:84938802801
T3 - ECS Transactions
SP - 1345
EP - 1352
BT - Solid Oxide Fuel Cells 14, SOFC 2015
A2 - Eguchi, K.
A2 - Singhal, S. C.
PB - Electrochemical Society Inc.
ER -