Synthesis and Thermoelectric Properties of Ni and Fe Double Doped Skutterudites

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	Synthesis and Thermoelectric Properties of Ni and Fe Double Doped Skutterudites
	Li, Yu 2; Ma, Leiqiang 2; Zheng, Rui 2; Lei, Ying 1,2,3; Jiang, Xiaowu 2; Gu, Jun 2; Wan, Rundong 4
刊名	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
	2020-07-01
卷号	49 期号:7 页码:2511-2516
关键词	Antimony compounds Crystal lattices Grain size and shape Iron Iron compounds Metal castings Microwave heating Nickel compounds Skutterudites Spark plasma sintering Thermal conductivity Thermoelectricity Electrical transport properties Element distribution Lattice thermal conductivity Scattering mechanisms Skutterudite compounds Thermoelectric properties Thermoelectric transport properties Traditional techniques
ISSN号	1002185X
英文摘要	A series of single phase Ni/Fe double doped skutterudite compounds Co3.8-xFexNi0.2Sb12 (x=0.05, 0.10, 0.15, 0.20) were synthesized by 5 min microwave heating for the first time. The resulting ingots were pulverized and sintered by spark plasma sintering to fabricate bulk samples, and their phase composition, grain size, element distribution, thermoelectric transport properties were investigated. The XRD patterns show that all samples are consistent with single phase of CoSb3. The FE-SEM morphologies reveal that the size of Co3.8-xFexNi0.2Sb12 (x=0.05, 0.10, 0.15, 0.20) matrix grain is about 1~3 μm, and the average size is about 1~2 μm. The EDS elemental maps reveal uniform Co, Fe, Ni, and Sb distributions. The electrical transport properties are further improved by Ni/Fe double doping, with the highest power factor of 2.667×103 μW•(m•K2)-1. The influence of Fe doping on lattice thermal conductivity is not significant, but there is a relationship between lattice thermal conductivity and grain size, and boundary scattering is the dominant scattering mechanism. The lattice thermal conductivity of Co3.65Fe0.15Ni0.2Sb12 is 2.8 W•(m•K)-1. The Co3.7Fe0.1Ni0.2Sb12 has the highest ZT of 0.50 at 773 K, which is obviously larger than that of Ni/Fe single or double doped samples produced via traditional techniques. © 2020, Science Press. All right reserved.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	中文
出版者	Science Press
WOS记录号	WOS:000559890100046
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115814]
专题	兰州理工大学
作者单位	1.City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong; 2.Anhui University of Technology, School of Metallurgical Engineering, Ma'anshan; 243032, China; 3.State key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 4.Kunming University of Science and Technology, Kunming; 650504, China
推荐引用方式 GB/T 7714	Li, Yu,Ma, Leiqiang,Zheng, Rui,et al. Synthesis and Thermoelectric Properties of Ni and Fe Double Doped Skutterudites[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2020,49(7):2511-2516.
APA	Li, Yu.,Ma, Leiqiang.,Zheng, Rui.,Lei, Ying.,Jiang, Xiaowu.,...&Wan, Rundong.(2020).Synthesis and Thermoelectric Properties of Ni and Fe Double Doped Skutterudites.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,49(7),2511-2516.
MLA	Li, Yu,et al."Synthesis and Thermoelectric Properties of Ni and Fe Double Doped Skutterudites".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 49.7(2020):2511-2516.