Cathode-electrolyte interfaces with CGO barrier layers in SOFC

Knibbe, Ruth, Hjelm, Johan, Menon, Mohan, Pryds, Nini, Sogaard, Martin, Wang, Hsiang Jen and Neufeld, Kai (2010) Cathode-electrolyte interfaces with CGO barrier layers in SOFC. Journal of the American Ceramic Society, 93 9: 2877-2883. doi:10.1111/j.1551-2916.2010.03763.x


Author Knibbe, Ruth
Hjelm, Johan
Menon, Mohan
Pryds, Nini
Sogaard, Martin
Wang, Hsiang Jen
Neufeld, Kai
Title Cathode-electrolyte interfaces with CGO barrier layers in SOFC
Journal name Journal of the American Ceramic Society   Check publisher's open access policy
ISSN 0002-7820
1551-2916
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1111/j.1551-2916.2010.03763.x
Open Access Status Not yet assessed
Volume 93
Issue 9
Start page 2877
End page 2883
Total pages 7
Place of publication Malden, MA, United States
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Electron microscopy characterization across the cathode-electrolyte interface of two different types of intermediate temperature solid oxide fuel cells (IT-SOFC) is performed to understand the origin of the cell performance disparity. One IT-SOFC cell had a sprayed-cosintered Ce0.90Gd0.01O1.95 (CGO10) barrier layer, the other had a barrier layer deposited by pulsed laser deposition (PLD) CGO10. Scanning electron microscopy, transmission electron microscopy (TEM), and electron backscattered diffraction (EBSD) investigations conclude that the major source of the cell performance difference is attributed to CGO-YSZ interdiffusion in the sprayed-cosintered barrier layer. From TEM and EBSD work, a dense CGO10 PLD layer is found to be deposited epitaxially on the 8YSZ electrolyte substrate - permitting a small amount of SrZrO3 formation and minimizing CGO-YSZ interdiffusion.
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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