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题名: Elemental Diffusion between Sm0.5Sr0.5CoO3-delta Cathode and La0.9Sr0.1Ga0.8Mg0.2O3-delta Electrolyte
作者: Hong Bo1, 2;  Zhang Yun1, 2;  Tu Baofeng1;  Cheng Mojie1
关键词: solid oxide fuel cell ;  lanthanum strontium magnesium gallium oxide ;  strontium-doped samarium cobaltite ;  electrochemical impedance spectroscopy
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2009-09-01
卷: 30, 期:9, 页:919-925
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 ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The effect of elemental diffusion from strontium-doped samarium cobaltite (SSC) cathode to lanthanum strontium magnesium gallium oxide (LSGM) electrolyte was investigated by electrochemical impedance spectroscopy (EIS) combined with X-ray diffraction (XRD). The XRD results showed that LaSrGa3O7 and LaSrGaO4 appeared at the interface between LSGM and SSC after sintering at high temperature. When the sintering temperature reached 1373 K, the high electronic conduction of the La-Sr-Co-O compound was formed. The decrease of open-circuit voltage and oxygen ion transfer number, and the increase of electronic conduction of LSGM electrolyte are the results of the cobalt diffusion from electrode to the LSGM film. The EIS results indicate that the electronic conduction of LSGM increases and the oxygen ion transfer number and open-circuit voltage decrease with increasing cathode sintering temperature, which arc caused by the formation of LaSrGa3O7 and LaSrGaO4 at the interface of LSGM and SSC.
关键词[WOS]: OXIDE FUEL-CELL ;  MG-DOPED LAGAO3 ;  CONDUCTOR ;  SOFC ;  SR
语种: 英语
WOS记录号: WOS:000271079600013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141530
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 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Hong Bo,Zhang Yun,Tu Baofeng,et al. Elemental Diffusion between Sm0.5Sr0.5CoO3-delta Cathode and La0.9Sr0.1Ga0.8Mg0.2O3-delta Electrolyte[J]. CHINESE JOURNAL OF CATALYSIS,2009,30(9):919-925.
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