skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Preparation and thermoelectric properties of high-performance Sb additional Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} bulk materials with nanostructure

Abstract

High-performance Sb excess Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} (y=0,0.3,0.6,1.0) bulk materials with nanostructure have been prepared by combining melt spinning technique with spark plasma sintering. Average grain size of the bulk samples is about 150 nm when y=0 and 0.3, and the grain size increases with the increase of y. Moderately superfluous Sb may improve the electrical transport properties effectively and the thermal conductivity of the bulk samples decreases markedly due to the nanostructure. The thermoelectric performance of the samples is significantly improved, and the maximum figure of the merit reaches 1.26 for the Yb{sub 0.2}Co{sub 4}Sb{sub 12.3} compound at 800 K.

Authors:
; ; ;  [1]
  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)
Publication Date:
OSTI Identifier:
21102025
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 92; Journal Issue: 20; Other Information: DOI: 10.1063/1.2936277; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANTIMONY ALLOYS; CHARGE TRANSPORT; COBALT ALLOYS; GRAIN SIZE; NANOSTRUCTURES; PERFORMANCE; PLASMA; SINTERING; THERMAL CONDUCTIVITY; THERMOELECTRIC PROPERTIES; THERMOELECTRICITY; YTTERBIUM ALLOYS

Citation Formats

Han, Li, Xinfeng, Tang, Xianli, Su, and Qingjie, Zhang. Preparation and thermoelectric properties of high-performance Sb additional Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} bulk materials with nanostructure. United States: N. p., 2008. Web. doi:10.1063/1.2936277.
Han, Li, Xinfeng, Tang, Xianli, Su, & Qingjie, Zhang. Preparation and thermoelectric properties of high-performance Sb additional Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} bulk materials with nanostructure. United States. https://doi.org/10.1063/1.2936277
Han, Li, Xinfeng, Tang, Xianli, Su, and Qingjie, Zhang. 2008. "Preparation and thermoelectric properties of high-performance Sb additional Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} bulk materials with nanostructure". United States. https://doi.org/10.1063/1.2936277.
@article{osti_21102025,
title = {Preparation and thermoelectric properties of high-performance Sb additional Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} bulk materials with nanostructure},
author = {Han, Li and Xinfeng, Tang and Xianli, Su and Qingjie, Zhang},
abstractNote = {High-performance Sb excess Yb{sub 0.2}Co{sub 4}Sb{sub 12+y} (y=0,0.3,0.6,1.0) bulk materials with nanostructure have been prepared by combining melt spinning technique with spark plasma sintering. Average grain size of the bulk samples is about 150 nm when y=0 and 0.3, and the grain size increases with the increase of y. Moderately superfluous Sb may improve the electrical transport properties effectively and the thermal conductivity of the bulk samples decreases markedly due to the nanostructure. The thermoelectric performance of the samples is significantly improved, and the maximum figure of the merit reaches 1.26 for the Yb{sub 0.2}Co{sub 4}Sb{sub 12.3} compound at 800 K.},
doi = {10.1063/1.2936277},
url = {https://www.osti.gov/biblio/21102025}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 20,
volume = 92,
place = {United States},
year = {Mon May 19 00:00:00 EDT 2008},
month = {Mon May 19 00:00:00 EDT 2008}
}