Oxidation in ceria infiltrated metal supported SOFCs - a TEM investigation

Knibbe, Ruth, Wang, Hsiang-Jen, Blennow, Peter, Thyden, Karl, Persson, Asa H., Mikkelsen, Lars and Klemenso, Trine (2013) Oxidation in ceria infiltrated metal supported SOFCs - a TEM investigation. Journal of Power Sources, 228 75-82. doi:10.1016/j.jpowsour.2012.11.051

Author Knibbe, Ruth
Wang, Hsiang-Jen
Blennow, Peter
Thyden, Karl
Persson, Asa H.
Mikkelsen, Lars
Klemenso, Trine
Title Oxidation in ceria infiltrated metal supported SOFCs - a TEM investigation
Journal name Journal of Power Sources   Check publisher's open access policy
ISSN 0378-7753
Publication date 2013-04-15
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.jpowsour.2012.11.051
Open Access Status Not yet assessed
Volume 228
Start page 75
End page 82
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Formatted abstract
The oxidation resistance of the Fe-Cr alloy backbone structure of metal supported solid oxide fuel cells is significantly improved when infiltrated with gadolinium doped ceria (CGO) particles. The mechanism for the improved oxidation behaviour is elucidated using various analytical transmission electron microscopy (TEM) techniques including energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy of focus ion beamed TEM samples. The infiltrated CGO is predominately converted into CeFeO3 after high temperature processing, protecting the alloy. A thin layer of Cr-oxide is observed to be sandwiched between the CeFeO3/CGO layers and the Fe-Cr alloy particles. Despite the improved oxidation resistance at open circuit voltage, during fuel cell testing accelerated oxidation is observed at the triple phase boundaries.
Keyword Analytical transmission electron microscopy
Fuel cell durability
Metal supported solid oxide fuel cells
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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