- Synthesis and Thermoelectric Properties of Carbon Nanotube-Dispersed Bi2Te3 Matrix Composite Powders by Chemical Routes
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Kyung Tae Kim, Injoon Son, Gook Hyun Ha
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J Powder Mater. 2013;20(5):345-349.
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DOI: https://doi.org/10.4150/KPMI.2013.20.5.345
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- Carbon nanotube-dispersed bismuth telluride matrix (CNT/Bi_2Te_3) nanopowders were synthesized by chemical routes followed by a ball-milling process. The microstructures of the synthesized CNT/Bi_2Te_3 nanopowders showed the characteristic microstructure of CNTs dispersed among disc-shaped Bi_2Te_3 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 Bi_2Te_3 matrix. The dimensionless figure-of-merit of the composite showed an enhanced value compared to that of pure Bi_2Te_3 at the room temperature due to the reduced thermal conductivity and increased electrical conductivity with the addition of CNTs.
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Citations
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