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Nanomaterials 2012, 2(4), 379-412; doi:10.3390/nano2040379

Recent Advances in Nanostructured Thermoelectric Half-Heusler Compounds

1
Empa, Swiss Federal Laboratories for Materials Science and Technology, Solid State Chemistry and Catalysis, CH-8600 Dubendorf, Switzerland
2
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
3
Department of Physics, University of Virginia, Charlottesville, VA 22904-4714, USA
4
Department of Physics and Astronomy, Department of Materials Science & Engineering, Clemson University, Clemson, SC 29634-0978, USA
*
Authors to whom correspondence should be addressed.
Received: 28 September 2012 / Revised: 5 November 2012 / Accepted: 5 November 2012 / Published: 14 November 2012
(This article belongs to the Special Issue Composite Nanomaterials)

Abstract

Half-Heusler (HH) alloys have attracted considerable interest as promising thermoelectric (TE) materials in the temperature range around 700 K and above, which is close to the temperature range of most industrial waste heat sources. The past few years have seen nanostructuing play an important role in significantly enhancing the TE performance of several HH alloys. In this article, we briefly review the recent progress and advances in these HH nanocomposites. We begin by presenting the structure of HH alloys and the different strategies that have been utilized for improving the TE properties of HH alloys. Next, we review the details of HH nanocomposites as obtained by different techniques. Finally, the review closes by highlighting several promising strategies for further research directions in these very promising TE materials.
Keywords: thermoelectric; half-Heusler; nanocomposite thermoelectric; half-Heusler; nanocomposite
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Xie, W.; Weidenkaff, A.; Tang, X.; Zhang, Q.; Poon, J.; Tritt, T.M. Recent Advances in Nanostructured Thermoelectric Half-Heusler Compounds. Nanomaterials 2012, 2, 379-412.

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