Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 737, Issue -, Pages 152-159Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.12.090
Keywords
Solid oxide fuel cells; Double perovskite; Catalytic activity; Electrochemical performance
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Funding
- New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant
- Ministry of Trade, Industry & Energy, Republic of Korea [20143030031430]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea [20164030201070]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20184030202210] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Ba(2)LnMoO(6) (Ln = Pr and Nd), with a double perovskite structure, has been investigated as an efficient anode material for solid oxide fuel cells (SOFCs) operating under methane fuel. Ba(2)LnMoO(6) (Ln = Pr and Nd) powders were successfully synthesized by a citric acid ethylene-diamine-tetraacetic acid (CA-EDTA) combustion technique. Ba(2)LnMoO(6) (Ln = Pr and Nd) was thermally and morphologically stable at high temperature and chemically compatible with the Gd0.2Ce0.8O1.8 (GDC) electrolyte. The electrical conductivities of Ba2PrMoO6 and Ba2NdMoO6 were 348.5 and 146 Scm(-1) under humidified CH4 at 800 degrees C, respectively. However, Ba(2)LnMoO(6) (Ln = Pr and Nd) exhibits better catalytic activity for the hydrogen oxidation reaction (HOR) than for the methane oxidation reaction (MOR); this is due to the presence of deposited carbon, which blocks the fuel path during the overall methane oxidation process. (C) 2017 Elsevier B.V. All rights reserved.
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