NDLI: Effect of polarization on the electrode behavior and microstructure of (La,Sr)MnO3 electrodes of solid oxide fuel cells

Content Provider	Springer Nature Link
Author	Wang, W. Jiang, S. P.
Copyright Year	2004
Abstract	The electrode behavior and microstructure of freshly prepared (La0.8Sr0.2)0.9MnO3 (LSM) electrodes were investigated under various polarization conditions. The original, large agglomerates in freshly prepared LSM electrodes were broken down into sphere-shaped grains when exposed to cathodic or anodic current passage of 200 mA cm−2 at 800 °C in air for 3 h. Microstructural changes under cathodic polarization could be related to the pronounced diffusion and migration of oxygen vacancies and Mn ions on the LSM surface and lattice expansion, while lattice shrinkage under oxidation conditions most likely contributes to the structural changes under anodic polarization. Such morphological changes were irreversible and were found to be beneficial to the performance of freshly prepared LSM electrodes. Freshly prepared LSM electrodes behaved very differently with respect to the cathodic and anodic current passage treatment.
Starting Page	914
Ending Page	922
Page Count	9
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	8
Issue Number	11
e-ISSN	14330768
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-03-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	(La,Sr)MnO3 Solid oxide fuel cells Polarization treatment Microstructure Electrode behavior
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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