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Co/Fe oxide and Ce0.8Gd0.2O2-delta composite interlayer for solid oxide electrolysis cell
Yan, Jingbo1,2; Shang, Lei1,2; Zhao, Zhe1; Ou, Dingrong1; Cheng, Mojie1
KeywordSolid Oxide Electrolysis Cell Ceria Interlayer Cobalt Oxide Sr Segregation
Source PublicationJOURNAL OF ENERGY CHEMISTRY
2016-09-01
DOI10.1016/j.jechem.2016.05.002
Volume25Issue:5Pages:840-844
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS KeywordYTTRIA-STABILIZED ZIRCONIA ; FUEL-CELLS ; DOPED CERIA ; OXYGEN ELECTRODES ; VAPOR-DEPOSITION ; CATHODE ; TEMPERATURE ; IMPEDANCE ; SOFC ; DEGRADATION
AbstractA composite interlayer comprised of gadolinia doped ceria (GDC) and Co/Fe oxide was prepared and investigated for solid oxide electrolysis cell with yttrium stabilized zirconia (YSZ) electrolyte and La0.6Sr0.4Co0.2Fe0.8O3-delta(LSCF) anode. The interlayer was constructed of a base layer of GDC and a top layer of discrete Co3O4/FeCo2O4 particles. The presence of the GDC layer drastically alleviated the undesired reactions between LSCF and YSZ, and the presence of Co/Fe oxide led to further performance improvement. At 800 degrees C and 45% humidity, the cell with 70% Co/Fe-GDC interlayer achieved 0.98 A/cm(2) at 1.18 V, 14% higher than the cell without Co/Fe oxide. Electrochemical impedance spectroscopy (EIS) revealed that with higher Co/Fe content, both the ohmic resistance and the polarization resistance of the cell were reduced. It is suggested that Co/Fe oxide can react with the Sr species segregated from LSCF and Sr1-x(Co,Fe)O3-delta, a compound with high catalytic activity and electronic conductivity. The Sr-capturing ability of Co/Fe oxide in combination with the Sr-blocking ability of GDC layer can effectively suppress the undesired reaction between LSCF and YSZ, and consequently improve the cell performance. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
Language英语
WOS IDWOS:000390131200014
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/151836
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
Yan, Jingbo,Shang, Lei,Zhao, Zhe,et al. Co/Fe oxide and Ce0.8Gd0.2O2-delta composite interlayer for solid oxide electrolysis cell[J]. JOURNAL OF ENERGY CHEMISTRY,2016,25(5):840-844.
APA Yan, Jingbo,Shang, Lei,Zhao, Zhe,Ou, Dingrong,&Cheng, Mojie.(2016).Co/Fe oxide and Ce0.8Gd0.2O2-delta composite interlayer for solid oxide electrolysis cell.JOURNAL OF ENERGY CHEMISTRY,25(5),840-844.
MLA Yan, Jingbo,et al."Co/Fe oxide and Ce0.8Gd0.2O2-delta composite interlayer for solid oxide electrolysis cell".JOURNAL OF ENERGY CHEMISTRY 25.5(2016):840-844.
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