Publications
Detailed Information
Microstructure and cathodic performance of La0.9Sr0.1MnO3 electrodes according to particle size of starting powder
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Jin H. | - |
dc.contributor.author | Jang, Jong H. | - |
dc.contributor.author | Ryu, Ji H. | - |
dc.contributor.author | Oh, Seung M. | - |
dc.date.accessioned | 2009-07-24T07:49:46Z | - |
dc.date.available | 2009-07-24T07:49:46Z | - |
dc.date.issued | 2000-04-05 | - |
dc.identifier.citation | J. Power Sources 87 (2000) 92 | en |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | https://hdl.handle.net/10371/5825 | - |
dc.description.abstract | Three La0.9Sr0.1MnO3 (LSM)/YSZ (yttria-stabilized zirconia) electrodes are prepared from LSM powders of different particle size via the silk-printing technique. The mean particle size of the three LSM powders is 1.54, 5.98 and 11.31 μm, respectively. The microstructural changes evolved during the course of electrode adhesion and half-cell operation are traced by taking scanning electron micrographs, and the cathodic activity is measured at 900°C in air using AC impedance spectroscopy. The LSM1 electrode prepared from the smallest powder shows good initial activity, but a rapid decrease in activity along with notable particle growth is observed within a short period of time. By contrast, the LSM3 electrode fabricated with the largest powder has a poor initial activity but the loss in activity is not appreciable as particle growth is insignificant. The LSM2 electrode that is prepared from medium-sized powder gives the best performances in terms of initial activity and long-term stability. It is likely that the LSM2 electrode has a larger number of active sites for the oxygen reduction reaction than LSM3 and the loss of active sites due to particle growth is less severe than with the LSM1 electrode. | en |
dc.description.sponsorship | Korea Science and Engineering Foundation 966-0304-
005-2. supported this work. | en |
dc.language.iso | en | en |
dc.publisher | Elsevier | en |
dc.subject | Solid oxide fuel cells | en |
dc.subject | Strontium-doped lanthanum manganites (La0.9Sr0.1MnO3) | en |
dc.subject | AC impedance spectroscopy | en |
dc.subject | Electrochemical O2 | en |
dc.title | Microstructure and cathodic performance of La0.9Sr0.1MnO3 electrodes according to particle size of starting powder | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 오승모 | - |
dc.identifier.doi | 10.1016/S0378-7753(99)00365-1 | - |
- Appears in Collections:
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.