Effect of Dy on the corrosion of NiO/Ni in molten (0.62Li,0.38K)(2)CO3

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	Effect of Dy on the corrosion of NiO/Ni in molten (0.62Li,0.38K)(2)CO3
	Z. P. Liu; P. Y. Guo; C. L. Zeng
	2007
发表期刊	Journal of Power Sources
ISSN	0378-7753
卷号	166 期号:2 页码:348-353
摘要	The dissolution of NiO cathodes and the balance between the corrosion and contact ohmic resistance of current collector materials in molten carbonates are great obstacles to the commercialization of molten carbonate fuel cells (MCFC). Rare-earth element dysprosium was proposed to modify the NiO cathodes and to alloy nickel to explore its possible applications in MCFC. The measured solubility of NiO impregnated with 0.5-3 wt.% Dy in (0.62Li,0.38K)(2)CO3 at 650 degrees C in 60% CO-40% O-2 indicated that Dy addition increased noticeably the stability of NiO, while I wt.% Dy content produced better effectiveness. An investigation of the passive behavior of nickel and of Ni-Dy alloys containing 1-10 wt.% Dy in molten (Li,K)(2)CO3 with dynamic polarization measurements as well as X-ray diffraction and X-ray photoelectron spectroscopy indicated that the addition of Dy to nickel decreased its passive anodic current, and thus improved its corrosion resistance. The lithiation of NiO in the melt was a very significant reaction that could be promoted by the Dy additives to a certain extent, and increased the electrical conductivity of NiO. (c) 2007 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;zeng, cl (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;clzeng@imr.ac.cn
关键词	Molten Carbonate Fuel Cell Dy Ni-dy Alloys Nio Solubility Electrochemical Polarization Carbonate Fuel-cell Electrochemical Impedance Oxidation Behavior Fe-20cr Alloys Base Alloys Cathodes Solubility Oxide Mcfc Licoo2
URL	查看原文
WOS记录号	WOS:000246048900008
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33727
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. P. Liu,P. Y. Guo,C. L. Zeng. Effect of Dy on the corrosion of NiO/Ni in molten (0.62Li,0.38K)(2)CO3[J]. Journal of Power Sources,2007,166(2):348-353.
APA	Z. P. Liu,P. Y. Guo,&C. L. Zeng.(2007).Effect of Dy on the corrosion of NiO/Ni in molten (0.62Li,0.38K)(2)CO3.Journal of Power Sources,166(2),348-353.
MLA	Z. P. Liu,et al."Effect of Dy on the corrosion of NiO/Ni in molten (0.62Li,0.38K)(2)CO3".Journal of Power Sources 166.2(2007):348-353.