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Combustion synthesis of doped LaGaO3 perovskite oxide with Fe

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Title: Combustion synthesis of doped LaGaO3 perovskite oxide with Fe
Authors: Hsieh, Feng-Fan Browse this author
Okinaka, Noriyuki Browse this author
Akiyama, Tomohiro Browse this author →KAKEN DB
Keywords: combustion synthesis
perovskite type oxide
Solid oxide fuel cell (SOFC)
Fe dope
spark plasma sintering (SPS)
Issue Date: 18-Sep-2009
Publisher: Elsevier
Journal Title: Journal of Alloys and Compounds
Volume: 484
Issue: 1-2
Start Page: 747
End Page: 752
Publisher DOI: 10.1016/j.jallcom.2009.05.030
Abstract: La0.7Sr0.3Ga0.7Mg0.1Fe0.2O3-δ (LSGMF73712) has been proposed as a new substitute for solid electrolyte in SOFC (solid oxide fuel cells). It has several merits, such as lower operating temperature of SOFC, high transport number of oxide ion and higher electronic conductivity. In this study, the doped-lanthanum gallium with Fe was produced by combustion synthesis, and the effect of particle sizes on sintering behaviors of La(Sr)Ga(Mg)FeO3-δ samples by spark plasma sintering (SPS) was analyzed by comparing with the traditional solid-state reaction method. In the experiments of the combustion synthesis, lanthanum oxide, strontium carbonate, metallic gallium, pure iron, metallic magnesium and sodium perchlorate were mixed uniformly and were ignited at one end of the sample under the argon atmosphere to complete the combustion process without any additional energy. Not only could this method shorten the processing time, but also it could minimize the sintering temperature in the production. As a result, the product showed definite peaks of lanthanum galliumin X-ray diffraction (XRD) patterns and the product could be sintered at a lower temperature 1473 K by SPS method, in comparison to a conventional solid-state reaction method. Moreover, the sintering temperature of the products could further decrease in a lower temperature 1273K after ball-mill treatment.
Type: article (author version)
Appears in Collections:エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 謝 豊帆

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