Synthesis and Thermoelectric Properties of Carbon Nanotube-Dispersed Bi2Te3 Matrix Composite Powders by Chemical Routes
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Carbon nanotube-dispersed bismuth telluride matrix (CNT/Bi2Te3) nanopowders were synthesized by chemical routes followed by a ball-milling process. The microstructures of the synthesized CNT/Bi2Te3 nanopowders showed the characteristic microstructure of CNTs dispersed among disc-shaped Bi2Te3 nanopowders with as an average size of 500 nm in-plane and a few tens of nm in thickness. The prepared nanopowders were sintered into composites with a homogeneous dispersion of CNTs in a Bi2Te3 matrix. The dimensionless figure-of-merit of the composite showed an enhanced value compared to that of pure Bi2Te3 at the room temperature due to the reduced thermal conductivity and increased electrical conductivity with the addition of CNTs.
Abstract
Carbon nanotube-dispersed bismuth telluride matrix (CNT/Bi2Te3) nanopowders were synthesized by chemical routes followed by a ball-milling process. The microstructures of the synthesized CNT/Bi2Te3 nanopowders showed the characteristic microstructure of CNTs dispersed among disc-shaped Bi2Te3 nanopowders with as an average size of 500 nm in-plane and a few tens of nm in thickness. The prepared nanopowders were sintered into composites with a homogeneous dispersion of CNTs in a Bi2Te3 matrix. The dimensionless figure-of-merit of the composite showed an enhanced value compared to that of pure Bi2Te3 at the room temperature due to the reduced thermal conductivity and increased electrical conductivity with the addition of CNTs.
참고문헌 (16)
- F. J. Disalro, , Science, 287, pp.1024~ (2000)
- R. J. Mehta., , Nature Mater. 11, 23, pp.3~ (2012)
- X. B. Zhao., , Appl. Phys. Lett, 86, pp.062111~ (2005)
- Y. Q. Cao., , Appl. Phys. Lett, 92, pp.143106~ (2008)
- W. Xie., , Appl. Phys. Lett, 94, pp.102111~ (2009)
- X. A. Fan., , Mat. Sci. Eng. A, 438-440, pp.190~ (2006)
- B. Poudel, , Science, 320, pp.634~ (2008)
- L. Zhao., , J. Alloys Comp, 455, pp.259~ (2008)
- G. Zhan., , Scripta Mater, 54, pp.77~ (2006)
- Y. Zhang., , Appl. Phys. Lett, 101, pp.031909~ (2012)
- K. T. Kim., , Carbon, 52, pp.541~ (2013)
- K. T. Kim., , Res. Chem. Inter, 36, pp.835~ (2010)
- 김경태, "Bismuth-telluride Thermoelectric Nanoparticles Synthesized by Using a Polyol Process", Journal of the Korean Physical Society, 57(41), pp.1037~1040 (2010), 한국물리학회
- J. Jiang., , Scripta Mater, 52, pp.347~ (2005)
- K. T. Kim., , Mater. Lett, 82, pp.141~ (2012)
- M. Scheele., , Adv. Func. Mater, 19, pp.3476~ (2009)