Frontiers in Energy >

2009 , Vol. 3 >Issue 1: 90 - 93

DOI: https://doi.org/10.1007/s11708-009-0005-1

RESEARCH ARTICLE

Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

  • Wen XU 1 ,
  • Laifeng LI , 1 ,
  • Rongjin HUANG 1 ,
  • Min ZHOU 1 ,
  • Liyun ZHENG 1 ,
  • Linghui GONG 1 ,
  • Chunmei SONG 2
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  • 1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • 2. Department of Physics, Zunyi Normal College, Zunyi 563002, China

Received date: 15 Aug 2008

Accepted date: 08 Oct 2008

Published date: 05 Mar 2009

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

The energy conversion properties of Bi-Sb system thermoelectric materials doped by Ag was investigated. Bi85Sb15-xAgx (x=0, 1, 2, 3, 4) alloys with Ag substitution for Sb were synthesized by mechanical alloying and then pressed under 5 GPa at 523 K for 30 min. The phase structure of the alloys was characterized by X-ray diffraction. The electric conductivities and the seebeck coefficients were measured at the temperature range of 80-300 K. The results reveal that the electric conductivities of the Ag-doped Bi-Sb alloys are highly improved. The power factor of Bi85Sb14Ag1 reaches a maximum value of 2.98×10-3 W/(K2•m) at 255 K, which is about three times that of the un-doped sample Bi85Sb15 at the same temperature.

Key words： thermoelectric conversion materials; high-pressure sintering; thermoelectric properties

Cite this article

Wen XU , Laifeng LI , Rongjin HUANG , Min ZHOU , Liyun ZHENG , Linghui GONG , Chunmei SONG . Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration[J]. Frontiers in Energy, 2009 , 3(1) : 90 -93 . DOI: 10.1007/s11708-009-0005-1

Acknowledgements

This project was supported by the National Natural Science Foundation of China (Grant Nos. 50666001, 50802101).

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