期刊
MATERIALS LETTERS
卷 162, 期 -, 页码 37-39出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.09.110
关键词
Cathode; Solid oxide fuel cell; Double perovskite
资金
- Postgraduate Education and Research Programs in Petroleum and Petrochemical Technology (PPT Consortium), Rachadapisake Sompote fund, Chulalongkorn University
- Development and Promotion of Science and Technology, Thailand project (DPST)
- National Metal and Materials Technology Center (MTEC), Thailand [P-00-30259]
- Marie Curie Intra European Fellowship within the Seventh European Community Framework Programme [PIEF-GA-2009-252711]
Synthesis of La3Ni2NbO9 and La3Ni2TaO9 double perovskite materials was successfully carried out. Both isostructural niobates and tantalates exhibited a monoclinic structure. Sample preparation via solid state reaction yielded a single phase of La3Ni2NbO9, while samples with impurities were obtained when using the sol-gel process. Nb and Ta substitution in La3Ni2MO9 had effects on the sintering behavior. The electrical conductivity of La3Ni2NbO9 was found to significantly increase with increasing temperature, but the electrical conductivity of La3Ni2TaO9 decreased with temperature when the temperature was lower than 300 degrees C then slightly increased again at higher temperature. (C) 2015 Elsevier B.V. All rights reserved.
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