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题名: LSM-YSZ nano-composite cathode with YSZ interlayer for solid oxide fuel cells
作者: Liu, Zhongbo1, 2;  Zhao, Zhe1;  Shang, Lei1, 2;  Ou, Dingrong1;  Cui, Daan1;  Tu, Baofeng1;  Cheng, Mojie1
关键词: Solid oxide fuel cell ;  LSM-YSZ cathode ;  Interlayer Three ;  phase boundary ;  Oxygen incorporation
刊名: JOURNAL OF ENERGY CHEMISTRY
发表日期: 2017-05-01
DOI: 10.1016/j.jechem.2016.11.019
卷: 26, 页:510-514
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering
英文摘要: Low temperature prepared (La-0.8 Sr-0.2)(0.9) MnO3-delta-Y-0.15 Zr-0.85 O-1.93 (LSM-YSZ) nano-composite cathode has high three-phase boundary (TPB) density and shows higher oxygen reduction reaction (ORR) activity than traditional LSM-YSZ cathode at reduced temperatures. But the weak connection between cathode and electrolyte due to low sintering temperature restrains the performance of LSM-YSZ nano-composite cathode. A YSZ interlayer, consisted of nanoparticles smaller than 10 nm, is introduced by spinning coating hydrolyzed YSZ sol solution on electrolyte and sintering at 800 degrees C. The thickness of the interlayer is about 150 nm. The YSZ interlayer intimately adheres to the electrolyte and shows obvious agglomeration with LSM-YSZ nano-composite cathode. The power densities of the cell with interlayer are 0.83, 0.46 and 0.21 W/cm 2 under 0.7 V at 80 0, 70 0 and 600 degrees C, respectively, which are 36%, 48% and 50% improved than that of original cell. The interlayer introduction slightly increases the ohmic resistance but significantly decreases the polarization resistance. The depressed high frequency arcs of impedance spectra suggest that the oxygen incorporation kinetics are enhanced at the boundary of YSZ interlayer and LSM-YSZ nanocomposite cathode, contributing to improved electrochemical performance of the cell with interlayer. (C) 2016Science Press and Dalian Institute of Chemical Physics,Chinese Academy of Sciences. Published by Elsevier B. V. and Science Press. All rights reserved.
关键词[WOS]: YTTRIA-STABILIZED ZIRCONIA ;  LOW-TEMPERATURE SYNTHESIS ;  IMPEDANCE SPECTROSCOPY ;  THIN-FILMS ;  PERFORMANCE ;  SOFC ;  MICROSTRUCTURE ;  POLARIZATION ;  DEGRADATION ;  DEPOSITION
语种: 英语
WOS记录号: WOS:000404653700027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152086
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Fuel Cells, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Liu, Zhongbo,Zhao, Zhe,Shang, Lei,et al. LSM-YSZ nano-composite cathode with YSZ interlayer for solid oxide fuel cells[J]. JOURNAL OF ENERGY CHEMISTRY,2017,26:510-514.
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