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	Composite electrolyte based on nanostructured Ce0.8Sm0.2O1.9 (SDC) for low-temperature solid oxide fuel cells
	Gao, Zhan ; Mao, Zongqiang ; Wang, Cheng ; Huang, Jianbing ; Liu, Zhixiang
	2010-10-12 ; 2010-10-12
关键词	low-temperature solid oxide fuel cell nanostructure Ce0.8Sm0.2O1.9 (SDC) composite electrolyte PERFORMANCE POWDERS CATHODES SOFC Energy & Fuels Nuclear Science & Technology
中文摘要	Nanostructured Ce0.8Sm0.2O1.9 (SDC) is investigated for low-temperature solid oxide fuel cells based on SDC- 30 wt% (53 mol% Li2CO3:47 mol % Na2CO3) composite electrolyte in this work. SDC is prepared by the combined citrate and EDTA complexing method. X-ray powder diffraction shows that it forms a well-cubic fluorite structure after being sintered at 700 degrees C for 2 h. The particle is about 12 nm detected by the transmission electron microscopy. Conductivity for the composite is much higher than the pure SDC at comparable temperatures. A transition of ionic conductivity occurs at 450 degrees C for the composite electrolyte. The single cells are fabricated by a simple dry-pressing process and tested at 450-600 degrees C. A maximum power density of 900 mW cm(-2) and the open-circuit voltage of 0.92 V are achieved at 600 degrees C. The conduction mechanism has been discussed by comparing the conductivity of composite electrolyte under different conditions. AC impedance for single cell indicates that the electrochemical process involving cathode and anode reactions is the rate-limiting step. Copyright (C) 2009 John Wiley & Sons, Ltd.
语种	英语 ; 英语
出版者	JOHN WILEY & SONS LTD ; CHICHESTER ; THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79318]
专题	清华大学
推荐引用方式 GB/T 7714	Gao, Zhan,Mao, Zongqiang,Wang, Cheng,et al. Composite electrolyte based on nanostructured Ce0.8Sm0.2O1.9 (SDC) for low-temperature solid oxide fuel cells[J],2010, 2010.
APA	Gao, Zhan,Mao, Zongqiang,Wang, Cheng,Huang, Jianbing,&Liu, Zhixiang.(2010).Composite electrolyte based on nanostructured Ce0.8Sm0.2O1.9 (SDC) for low-temperature solid oxide fuel cells..
MLA	Gao, Zhan,et al."Composite electrolyte based on nanostructured Ce0.8Sm0.2O1.9 (SDC) for low-temperature solid oxide fuel cells".(2010).

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