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	Preparation of LSM-YSZ composite powder for anode of solid oxide electrolysis cell and its activation mechanism
	Liang, Mingde ; Yu, Bo ; Wen, Mingfen ; Chen, Jing ; Xu, Jingming ; Zhai, Yuchun
	2010-10-12 ; 2010-10-12
关键词	Hydrogen production High-temperature steam electrolysis Solid oxide electrolysis cells Composite powder Mechanism TEMPERATURE STEAM ELECTROLYSIS HYDROGEN-PRODUCTION FUEL-CELLS OXYGEN REDUCTION POLARIZATION ELECTRODES PERFORMANCE BEHAVIOR LAMNO3 SOEC Electrochemistry Energy & Fuels
中文摘要	Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM-YSZ) composite powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin-nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM-YSZ composite powder and the relevant LSM powder are characterized by XRD and FESEM. The results show that LSM-YSZ is net-porous composite powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM-YSZ powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a Current density of 0.33 Acm(-2) and 900 C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM-YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2- oxidation on LSM electrodes. (C) 2009 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79266]
专题	清华大学
推荐引用方式 GB/T 7714	Liang, Mingde,Yu, Bo,Wen, Mingfen,et al. Preparation of LSM-YSZ composite powder for anode of solid oxide electrolysis cell and its activation mechanism[J],2010, 2010.
APA	Liang, Mingde,Yu, Bo,Wen, Mingfen,Chen, Jing,Xu, Jingming,&Zhai, Yuchun.(2010).Preparation of LSM-YSZ composite powder for anode of solid oxide electrolysis cell and its activation mechanism..
MLA	Liang, Mingde,et al."Preparation of LSM-YSZ composite powder for anode of solid oxide electrolysis cell and its activation mechanism".(2010).

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