Bi2Te3-MWCNT nanocomposite: An efficient thermoelectric material

Autor: Punit Kumar Dhawan, R. R. Yadav, Neeraj Khare, Deepti Chaudhary, Sunil Kumar
Rok vydání: 2017
Předmět:
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