DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Seung Jun | ko |
dc.contributor.author | Kim, Dong Suk | ko |
dc.contributor.author | Kim, Do Kyung | ko |
dc.date.accessioned | 2019-04-16T03:11:52Z | - |
dc.date.available | 2019-04-16T03:11:52Z | - |
dc.date.created | 2013-07-17 | - |
dc.date.issued | 2011-01-23 | - |
dc.identifier.citation | 35th International Conference and Exposition on Advanced Ceramics and Composites | - |
dc.identifier.uri | http://hdl.handle.net/10203/260165 | - |
dc.description.abstract | A cobalt-free Ca2Fe2O5 oxide with alternating perovskite layers of corner-sharing FeO6 octahedra and layers of FeO4 tetrahedra have been synthesized and investigated as a potential cathode material for solid oxide fuel cells (SOFCs). Our preliminary electrochemical testes show a rather high area specific resistance (1.03 Ωcm2 at 700 oC) for ~20 μm thick layers with GDC electrolyte. The electrochemical performances are improved in the composite with 30 wt%GDC (CG30-70, 0.31 Ωcm2 at 700 oC). In addition, thermal expansion coefficient (TEC) values of CG30-70 specimen demonstrated 12.9x10-6 oC-1 in the range of 25-900 oC, which provides good thermal expansion compatibility with the GDC electrolyte. The long-term thermal stability and thermal cycle tests of the CG30-70 cathode were carried out. The stable ARS values were observed during both the long-term thermal stability test and the thermal cycle test. An electrolyte supported (300-μm-thick) single-cell configuration of CG30-70/CGO/Ni-CGO delivered a maximum power density of 563 mWcm-2 at 800 oC. The unique composite composition of CG30-70 demonstrates improved electrochemical performance and good thermal stability for IT-SOFCs. | - |
dc.language | English | - |
dc.publisher | The American Ceramic Society, The American Cermic Society's Engineering Ceramics Division | - |
dc.title | Development of Low Thermal Expansion Ca2Fe2O5 Cathode Materials for Solid Oxide Fuel Cells | - |
dc.type | Conference | - |
dc.type.rims | CONF | - |
dc.citation.publicationname | 35th International Conference and Exposition on Advanced Ceramics and Composites | - |
dc.identifier.conferencecountry | US | - |
dc.contributor.localauthor | Kim, Do Kyung | - |
dc.contributor.nonIdAuthor | Lee, Seung Jun | - |
dc.contributor.nonIdAuthor | Kim, Dong Suk | - |
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