Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Joh, Dong Woo | - |
dc.contributor.author | Rath, Manasa K. | - |
dc.contributor.author | Park, Jin Wan | - |
dc.contributor.author | Park, Jeong Hwa | - |
dc.contributor.author | Cho, Ki Hyun | - |
dc.contributor.author | Lee, Seunghwan | - |
dc.contributor.author | Yoon, Kyung Joong | - |
dc.contributor.author | Lee, Jong-Ho | - |
dc.contributor.author | Lee, Kang Taek | - |
dc.date.available | 2017-07-05T08:31:58Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2016-10-15 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/2172 | - |
dc.description.abstract | Ultra-fine Gd-doped ceria (GDC) powders were synthesized via co-precipitation using ammonium carbonate as the precipitant. The crystallite size of the resultant GDC powders was measured as ∼33 nm. The dilatometry test of the powder compacts and the relative density measurement of sintered pellets with various sintering temperatures revealed the synthesized nano-GDC powders had superior sinterability compared to commercial GDC powders (e.g., 96% vs 78% in relative density at 1300 °C, respectively). Based on the total conductivity measurement of the co-precipitated GDC via electrochemical impedance spectroscopy, we found there was an optimum sintering temperature range (1300-1400 °C) to achieve both high density and high conductivity due to significant increase in grain boundary resistance at higher temperature (1500 °C). Moreover, the nano-sized and highly sinterable co-precipitated GDC effectively enhanced oxygen reduction reaction at the La0.6Sr0.4Co0.2Fe0.8O3-δ/GDC composite cathode due to increase in active reaction sites as well as enhanced phase connectivity in 3D-bulk at lower sintering temperatures. © 2016 Elsevier B.V. All rights reserved. | - |
dc.publisher | Elsevier | - |
dc.title | Sintering behavior and electrochemical performances of nano-sized gadolinium-doped ceria via ammonium carbonate assisted co-precipitation for solid oxide fuel cells | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jallcom.2016.04.270 | - |
dc.identifier.scopusid | 2-s2.0-84965123479 | - |
dc.identifier.bibliographicCitation | Journal of Alloys and Compounds, v.682, pp.188 - 195 | - |
dc.subject.keywordAuthor | Solid oxide fuel cells | - |
dc.subject.keywordAuthor | Co-precipitation | - |
dc.subject.keywordAuthor | Doped ceria | - |
dc.subject.keywordAuthor | Sinterability | - |
dc.subject.keywordAuthor | Ionic conductivity | - |
dc.subject.keywordPlus | Carbonates | - |
dc.subject.keywordPlus | Cathodes | - |
dc.subject.keywordPlus | CERAMICS | - |
dc.subject.keywordPlus | Co-Precipitation | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | Conductivity Measurements | - |
dc.subject.keywordPlus | Coprecipitation | - |
dc.subject.keywordPlus | Crystallite Size | - |
dc.subject.keywordPlus | Doped Ceria | - |
dc.subject.keywordPlus | ELECTRICAL-PROPERTIES | - |
dc.subject.keywordPlus | Electrochemical Impedance Spectroscopy | - |
dc.subject.keywordPlus | Electrochemical Performance | - |
dc.subject.keywordPlus | Electrolytes | - |
dc.subject.keywordPlus | Electrolytic Reduction | - |
dc.subject.keywordPlus | Fabrication | - |
dc.subject.keywordPlus | Fuel Cells | - |
dc.subject.keywordPlus | Grain Boundaries | - |
dc.subject.keywordPlus | Grain Boundary Resistance | - |
dc.subject.keywordPlus | Ionic Conduction in Solids | - |
dc.subject.keywordPlus | Ionic Conductivity | - |
dc.subject.keywordPlus | Lower Sintering Temperatures | - |
dc.subject.keywordPlus | Oxygen Reduction Reaction | - |
dc.subject.keywordPlus | Powders | - |
dc.subject.keywordPlus | Relative Density Measurement | - |
dc.subject.keywordPlus | Sinterability | - |
dc.subject.keywordPlus | Sintering | - |
dc.subject.keywordPlus | Solid Oxide Fuel Cells | - |
dc.subject.keywordPlus | Solid Oxide Fuel Cells (SOFC) | - |
dc.subject.keywordPlus | STABILIZED-ZIRCONIA | - |
dc.subject.keywordPlus | TemPERATURE | - |
dc.citation.endPage | 195 | - |
dc.citation.startPage | 188 | - |
dc.citation.title | Journal of Alloys and Compounds | - |
dc.citation.volume | 682 | - |
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