Bi2Te3-MWCNT nanocomposite: An efficient thermoelectric material
Autor: | Punit Kumar Dhawan, R. R. Yadav, Neeraj Khare, Deepti Chaudhary, Sunil Kumar |
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Rok vydání: | 2017 |
Předmět: |
Nanostructure
Materials science Nanocomposite Phonon scattering Process Chemistry and Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Thermoelectric materials 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Thermal conductivity Electrical resistivity and conductivity Thermoelectric effect Materials Chemistry Ceramics and Composites Figure of merit Composite material 0210 nano-technology |
Zdroj: | Ceramics International. 43:14976-14982 |
ISSN: | 0272-8842 |
DOI: | 10.1016/j.ceramint.2017.08.017 |
Popis: | Bi 2 Te 3 –MWCNT nanocomposite has been synthesized by hydrothermal technique and demonstrate the role of MWCNT for thermoelectric properties. Herein, MWCNT has been used as conducting filler, which leads to the enhancement in the electrical conductivity in the case of nanocomposite. Bi 2 Te 3 –MWCNT nanocomposite shows ~22% decrease in the thermal conductivity as compared to Bi 2 Te 3 nanostructures, which is attributed to the enhanced phonon scattering at the interfaces of Bi 2 Te 3 –MWCNT nanocomposite. Due to the increase in the electrical conductivity and decrease in the thermal conductivity, the overall enhancement in the figure of merit is ~45% in Bi 2 Te 3 –MWCNT nanocomposite as compared to Bi 2 Te 3 nanostructures. |
Databáze: | OpenAIRE |
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