Abstract
After the fabrication of anode-supported planar solid oxide fuel cells (SOFCs), the mismatch of the thermal expansion coefficients (TECs) between the anode and the electrolyte introduces residual thermal stress in the cells. This residual stress on the electrolyte limits reliable cell operation in practice, and it often results in the failure of the cells. To alleviate the residual thermal stress of the cell, especially on the surface of the electrolyte, we propose to use an additional stress relieving porous layer between the electrolyte and the cathode. To analyze the stress reducing effect of the additional layer, several numerical calculations were carried out using various designs of the aid layer. In our simulation, the residual stress in the electrolyte was significantly reduced in the aided cell structures.
| Original language | English |
|---|---|
| Pages (from-to) | 2149-2154 |
| Number of pages | 6 |
| Journal | International Journal of Precision Engineering and Manufacturing |
| Volume | 13 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2012 Dec 1 |
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Keywords
- Additional aid layer
- Electrolyte
- Finite element analysis
- Residual thermal stress
- SOFCs
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Industrial and Manufacturing Engineering
- Mechanical Engineering
Cite this
Reduction of residual thermal stress on anode-supported SOFCs using porous aid layers. / Kim, Kyung Phil; Bae, Kiho; Kim, Kwon Hee; Shim, Joon Hyung.
In: International Journal of Precision Engineering and Manufacturing, Vol. 13, No. 12, 01.12.2012, p. 2149-2154.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reduction of residual thermal stress on anode-supported SOFCs using porous aid layers
AU - Kim, Kyung Phil
AU - Bae, Kiho
AU - Kim, Kwon Hee
AU - Shim, Joon Hyung
PY - 2012/12/1
Y1 - 2012/12/1
N2 - After the fabrication of anode-supported planar solid oxide fuel cells (SOFCs), the mismatch of the thermal expansion coefficients (TECs) between the anode and the electrolyte introduces residual thermal stress in the cells. This residual stress on the electrolyte limits reliable cell operation in practice, and it often results in the failure of the cells. To alleviate the residual thermal stress of the cell, especially on the surface of the electrolyte, we propose to use an additional stress relieving porous layer between the electrolyte and the cathode. To analyze the stress reducing effect of the additional layer, several numerical calculations were carried out using various designs of the aid layer. In our simulation, the residual stress in the electrolyte was significantly reduced in the aided cell structures.
AB - After the fabrication of anode-supported planar solid oxide fuel cells (SOFCs), the mismatch of the thermal expansion coefficients (TECs) between the anode and the electrolyte introduces residual thermal stress in the cells. This residual stress on the electrolyte limits reliable cell operation in practice, and it often results in the failure of the cells. To alleviate the residual thermal stress of the cell, especially on the surface of the electrolyte, we propose to use an additional stress relieving porous layer between the electrolyte and the cathode. To analyze the stress reducing effect of the additional layer, several numerical calculations were carried out using various designs of the aid layer. In our simulation, the residual stress in the electrolyte was significantly reduced in the aided cell structures.
KW - Additional aid layer
KW - Electrolyte
KW - Finite element analysis
KW - Residual thermal stress
KW - SOFCs
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UR - http://www.scopus.com/inward/citedby.url?scp=84876549791&partnerID=8YFLogxK
U2 - 10.1007/s12541-012-0285-y
DO - 10.1007/s12541-012-0285-y
M3 - Article
VL - 13
SP - 2149
EP - 2154
JO - International Journal of Precision Engineering and Manufacturing
JF - International Journal of Precision Engineering and Manufacturing
SN - 1229-8557
IS - 12
ER -