Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds

The Ni-doped ZrCo1−xNixSb half-Heusler compounds were prepared by arc-melting and spark plasma sintering technology. X-ray diffraction analysis results showed that all samples were crystallized in a half-Heusler phase. Thermoelectric properties of ZrCo1−xNixSb compounds were measured from room tempe...

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Main Authors:	Degang Zhao, Lin Wang, Lin Bo, Di Wu
Format:	Article
Language:	English
Published:	MDPI AG 2018-01-01
Series:	Metals
Subjects:	half-Heusler compound thermoelectric property ZrCoSb Ni-doping
Online Access:	http://www.mdpi.com/2075-4701/8/1/61

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spelling	doaj-08fc129c0abc461495633670564f94472020-11-24T22:37:14ZengMDPI AGMetals2075-47012018-01-01816110.3390/met8010061met8010061Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler CompoundsDegang Zhao0Lin Wang1Lin Bo2Di Wu3School of Materials Science and Engineering, University of Jinan, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, Jinan 250022, ChinaThe Ni-doped ZrCo1−xNixSb half-Heusler compounds were prepared by arc-melting and spark plasma sintering technology. X-ray diffraction analysis results showed that all samples were crystallized in a half-Heusler phase. Thermoelectric properties of ZrCo1−xNixSb compounds were measured from room temperature to 850 K. The electrical conductivity and the absolute value of Seebeck coefficient increased with the Ni-doping content increasing due to the Ni substitution at Co. sites. The lattice thermal conductivity of ZrCo1−xNixSb samples was depressed dramatically because of the acoustic phonon scattering and point defect scattering. The figure of merit of ZrCo1−xNixSb compounds was improved due to the decreased thermal conductivity and improved power factor. The maximum ZT value of 0.24 was achieved for ZrCo0.92Ni0.08Sb sample at 850 K.http://www.mdpi.com/2075-4701/8/1/61half-Heusler compoundthermoelectric propertyZrCoSbNi-doping
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Degang Zhao Lin Wang Lin Bo Di Wu
spellingShingle	Degang Zhao Lin Wang Lin Bo Di Wu Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds Metals half-Heusler compound thermoelectric property ZrCoSb Ni-doping
author_facet	Degang Zhao Lin Wang Lin Bo Di Wu
author_sort	Degang Zhao
title	Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds
title_short	Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds
title_full	Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds
title_fullStr	Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds
title_full_unstemmed	Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds
title_sort	synthesis and thermoelectric properties of ni-doped zrcosb half-heusler compounds
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2018-01-01
description	The Ni-doped ZrCo1−xNixSb half-Heusler compounds were prepared by arc-melting and spark plasma sintering technology. X-ray diffraction analysis results showed that all samples were crystallized in a half-Heusler phase. Thermoelectric properties of ZrCo1−xNixSb compounds were measured from room temperature to 850 K. The electrical conductivity and the absolute value of Seebeck coefficient increased with the Ni-doping content increasing due to the Ni substitution at Co. sites. The lattice thermal conductivity of ZrCo1−xNixSb samples was depressed dramatically because of the acoustic phonon scattering and point defect scattering. The figure of merit of ZrCo1−xNixSb compounds was improved due to the decreased thermal conductivity and improved power factor. The maximum ZT value of 0.24 was achieved for ZrCo0.92Ni0.08Sb sample at 850 K.
topic	half-Heusler compound thermoelectric property ZrCoSb Ni-doping
url	http://www.mdpi.com/2075-4701/8/1/61
work_keys_str_mv	AT degangzhao synthesisandthermoelectricpropertiesofnidopedzrcosbhalfheuslercompounds AT linwang synthesisandthermoelectricpropertiesofnidopedzrcosbhalfheuslercompounds AT linbo synthesisandthermoelectricpropertiesofnidopedzrcosbhalfheuslercompounds AT diwu synthesisandthermoelectricpropertiesofnidopedzrcosbhalfheuslercompounds
_version_	1725718205966581760

Synthesis and Thermoelectric Properties of Ni-Doped ZrCoSb Half-Heusler Compounds

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