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http://hdl.handle.net/10773/19913
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DC Field | Value | Language |
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dc.contributor.author | Lima, Chrystian G. M. | pt |
dc.contributor.author | Santos, Thamyscira H. | pt |
dc.contributor.author | Grilo, Joao P. F. | pt |
dc.contributor.author | Dutra, Ricardo P. S. | pt |
dc.contributor.author | Nascimento, Rubens M. | pt |
dc.contributor.author | Rajesh, Surendran | pt |
dc.contributor.author | Fonseca, Fabio C. | pt |
dc.contributor.author | Macedo, Daniel A. | pt |
dc.date.accessioned | 2017-12-07T19:29:10Z | - |
dc.date.issued | 2015 | pt |
dc.identifier.issn | 0272-8842 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/19913 | - |
dc.description.abstract | The effects of copper oxide (CuO) addition on the crystal structure, densification and microstructure of Gd-doped ceria (Ce0.9Gd0.1O2-delta, CGO) synthesized by the polymeric precursor method have been studied. Ce0.9-xGd0.1CUxO2-delta (0 <= X <= 0.01) precursor powders were calcined at 600 degrees C for 1 h and the phase formation was studied by powder X-ray diffraction combined with Rietveld refinement analysis. Relative density measurements and microstructural analysis were performed on pellets sintered in the temperature range 1000-1100 degrees C in air. The effect of CuO as a sintering aid becomes more visible when its content is in the 0.5-1 mol% range where the relative densities are found to be 98% for sintering temperature as low as 1000 degrees C. A remarkable reduction (up to similar to 500 degrees C) in the sintering temperature for 1 mol% CuO-doped CGO ceramics is observed together with the formation of a dissolved phase of Gd2O3-CeO2-CuO. Ce0.89Gd0.1Cu0.01-yO2-delta sintered at 1000 degrees C shows total electrical conductivity of 15.5 mS cm(-1) at 600 degrees C slightly higher than Ce0.9Gd0.1O2-delta sintered at 1500 degrees C (12.4 mS cm(-1)). (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. | pt |
dc.language.iso | eng | pt |
dc.publisher | ELSEVIER SCI LTD | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | OXIDE FUEL-CELLS | pt |
dc.subject | SOLID ELECTROLYTES | pt |
dc.subject | SINTERING AID | pt |
dc.subject | CERIA | pt |
dc.subject | CEO2 | pt |
dc.subject | CONDUCTIVITY | pt |
dc.subject | NANOPOWDERS | pt |
dc.subject | TRANSPORT | pt |
dc.subject | SIZE | pt |
dc.subject | GDC | pt |
dc.title | Synthesis and properties of CuO-doped Ce0.9Gd0.1O2-delta electrolytes for SOFCs | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 4161 | pt |
degois.publication.issue | 3 | pt |
degois.publication.lastPage | 4168 | pt |
degois.publication.title | CERAMICS INTERNATIONAL | pt |
degois.publication.volume | 41 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1016/j.ceramint.2014.12.093 | pt |
dc.identifier.doi | 10.1016/j.ceramint.2014.12.093 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Synthesis and properties of CuO-doped Ce0.9Gd0.1O2-delta electrolytes for SOFCs_10.1016j.ceramint.2014.12.093.pdf | 1.51 MB | Adobe PDF |
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