Effect of alumina additions in YSZ on the microstructure and degradation of the LSM-YSZ interface

Knibbe, R., Drennan, J. and Love, J.G. (2009) Effect of alumina additions in YSZ on the microstructure and degradation of the LSM-YSZ interface. Solid State Ionics, 180 14-16: 984-989. doi:10.1016/j.ssi.2009.04.006


Author Knibbe, R.
Drennan, J.
Love, J.G.
Title Effect of alumina additions in YSZ on the microstructure and degradation of the LSM-YSZ interface
Journal name Solid State Ionics   Check publisher's open access policy
ISSN 0167-2738
Publication date 2009-06-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.ssi.2009.04.006
Volume 180
Issue 14-16
Start page 984
End page 989
Total pages 6
Editor J. Maier
Place of publication Amsterdam , Netherlands
Publisher Elsevier Science Bv
Language eng
Subject 03 Chemical Sciences
C1
0204 Condensed Matter Physics
970103 Expanding Knowledge in the Chemical Sciences
Formatted abstract
The cathode–electrolyte interface in a solid oxide fuel cell is examined to understand why premature delamination is observed in alumina substituted YSZ electrolyte. From XRD, SEM and TEM observations it was concluded that after high temperature sintering a tetragonal (Mn,Al)3O4 forms at the interface, which during prolonged fuel cell operation forms a cubic (Mn,Al)3O4 phase. This transformation is associated with volume decrease creating voids which ultimately weaken the cathode–electrolyte interface sufficiently for the cathode layer to delaminate off the YSZ–Al2O3 electrolyte.
Keyword SOFC
OXIDE FUEL-CELLS
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Centre for Microscopy and Microanalysis Publications
 
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Created: Thu, 03 Sep 2009, 17:52:14 EST by Mr Andrew Martlew on behalf of Centre for Microscopy and Microanalysis