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	Improvement of Thermoelectric Performance of CoSb3-xTex Skutterudite Compounds by Additional Substitution of IVB-Group Elements for Sb
	Liu, Wei-Shu ; Zhang, Bo-Ping ; Zhao, Li-Dong ; Li, Jin-Feng
	2010-10-12 ; 2010-10-12
关键词	POINT-DEFECT HIGH FIGURE SCATTERING LATTICE MERIT Chemistry, Physical Materials Science, Multidisciplinary
中文摘要	An enhanced ZT value as high as 1.1 at similar to 550 degrees C has been achieved in n-type nanostructured CoSb3-xTex skutterudite compounds through additional substitution of IVB-group elements (Si, Ge, Sn, Pb) for Sb. Particularly, Sri was found to be the most effective element to enhance the ZT value by extending the solubility limit of Te in CoSb3-xTex, which decreases thermal conductivity more significantly than electrical conductivity. The reduced thermal conductivity is confirmed by the Raman scattering measurement of CoSb2.86M0.02Te0.12 (M = Si, Ge, Sn, Pb), which shows that Ge and Sn enter into the Sb-site of CoSb3 and generate significant changes in the vibration modes, whereas Si and Pb are not likely to get into the lattice of CoSb3. Furthermore, nanostructure with fine grains and "nanodots" also contributes to the reduction of thermal conductivity.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78228]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Wei-Shu,Zhang, Bo-Ping,Zhao, Li-Dong,et al. Improvement of Thermoelectric Performance of CoSb3-xTex Skutterudite Compounds by Additional Substitution of IVB-Group Elements for Sb[J],2010, 2010.
APA	Liu, Wei-Shu,Zhang, Bo-Ping,Zhao, Li-Dong,&Li, Jin-Feng.(2010).Improvement of Thermoelectric Performance of CoSb3-xTex Skutterudite Compounds by Additional Substitution of IVB-Group Elements for Sb..
MLA	Liu, Wei-Shu,et al."Improvement of Thermoelectric Performance of CoSb3-xTex Skutterudite Compounds by Additional Substitution of IVB-Group Elements for Sb".(2010).

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