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题名: Co-synthesized (La0.8Sr0.2)(0.9)MnO3-Y0.15Zr0.85O2 composite for solid oxide fuel cell cathode
作者: Liu, Zhongbo1, 2;  Zhang, Xiaomin1, 2;  Huang, Zhidong1, 2;  Zhao, Zhe1;  Cui, Daan1;  Cheng, Mojie1
关键词: Solid oxide fuel cells ;  Composite cathode ;  Co-synthesis ;  Three phase boundary ;  Oxygen reduction reaction
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2016-12-14
DOI: 10.1016/j.ijhydene.2016.07.177
卷: 41, 期:46, 页:21385-21393
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
英文摘要: (La0.8Sr0.2)(0.9)MnO3-Y0.15Zr0.85O2 (LSM-YSZ) composite co-synthesized by citrate-nitrate combustion method are investigated for solid oxide fuel cell cathode. The co-synthesized LSM-YSZ composite powders are characterized by XRD, HR-SEM, TEM, HR-TEM and EDX analysis. The phase separation of the precursor into LSM perovskite and YSZ fluorite occurs at temperatures above 900 degrees C, about 200 degrees C higher than the formation temperature of pure LSM or pure YSZ. In the nano-sheets of LSM-YSZ composite, nano-particles of LSM and YSZ are well distributed and intimately contacted with each other. The nanostructures remain in the co-synthesized LSM-YSZ cathode. The co-synthesized LSM-YSZ cathode improves oxygen reduction reaction (ORR) activity, especially at reduced operation temperature. The cell with co-synthesized LSM-YSZ cathode delivers current density 150% times of the cell with traditional LSM-YSZ cathode at 600 degrees C. Electrochemical impedance spectra (EIS) analysis shows that oxygen reduction reaction is accelerated due to high three phase boundary (TPB) density. The co-synthesized LSM-YSZ cathode shows good stability under cell operation at 800 degrees C. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: LOW-TEMPERATURE SYNTHESIS ;  IMPEDANCE SPECTROSCOPY ;  HIGH-PERFORMANCE ;  THIN-FILMS ;  SOFC ;  MICROSTRUCTURE ;  POLARIZATION ;  ELECTRODES ;  INTERFACE ;  POWDERS
语种: 英语
WOS记录号: WOS:000389089600031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150354
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, Dalian Natl Lab Clean Energy, Div Fuel Cells, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Liu, Zhongbo,Zhang, Xiaomin,Huang, Zhidong,et al. Co-synthesized (La0.8Sr0.2)(0.9)MnO3-Y0.15Zr0.85O2 composite for solid oxide fuel cell cathode[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2016,41(46):21385-21393.
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