Layered oxygen-deficient double perovskite as an effcient and stable anode for direct hydrocarbon solid oxide fuel cells 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Nature materials
年/卷/期
2015 / 14 / 2
页码
205-209
ISSN号
1476-1122
作者单位
Ulsan Natl Inst Sci & Technol, Dept Energy Engn, Ulsan 689798, South Korea;Ulsan Natl Inst Sci & Technol, Dept Energy Engn, Ulsan 689798, South Korea;Ulsan Natl Inst Sci & Technol, Dept Energy Engn, Ulsan 689798, South Korea;Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland;Ulsan Natl Inst Sci & Technol, Dept Energy Engn, Ulsan 689798, South Korea;UNIST, UNIST Cent Res Facil, Ulsan 689798, South Korea;Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland;Ulsan Natl Inst Sci & Technol, Dept Energy Engn, Ulsan 689798, South Korea;Dong Eui Univ, Dept Mech Engn, Pusan 614714, South Korea;
作者
Sengodan, Sivaprakash;Choi, Sihyuk;Jun, Areum;Shin, Tae Ho;Ju, Young-Wan;Jeong, Hu Young;Irvine, John T. S.;Kim, Guntae;Shin, Jeeyoung;
摘要
Different layered perovskite-related oxides are known to exhibit important electronic, magnetic and electrochemical properties. Owing to their excellent mixed-ionic and electronic conductivity and fast oxygen kinetics, cation layered double perovskite oxides such as PrBaCo2O5 in particular have exhibited excellent properties as solid oxide fuel cell oxygen electrodes(1). Here, we show for the first time that related layered materials can be used as high-performance fuel electrodes. Good redox stability with tolerance to coking and sulphur contamination from hydrocarbon fuels is demonstrated for the layered perovskite anode PrBaMn2O5+delta (PBMO). The PBMO anode is fabricated by in situ annealing of Pr0.5Ba0.5MnO3-delta in fuel conditions and actual fuel cell operation is demonstrated. At 800 degrees C, layered PBMO shows high electrical conductivity of 8.16 S cm(-1) in 5% H-2 and demonstrates peak power densities of 1.7 and 1.3Wcm(-2) at 850 degrees C using humidified hydrogen and propane fuels, respectively.
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