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Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
- Source :
- Materials, Materials, Vol 12, Iss 21, p 3567 (2019), Materials; Volume 12; Issue 21; Pages: 3567
- Publication Year :
- 2019
- Publisher :
- MDPI, 2019.
-
Abstract
- Carbon nanotubes have been intensively researched for many years because of a wide array of promising properties that they have. In this paper, we present the impact of synthesis parameters on thermoelectric properties of nanocarbon material. We conducted a number of syntheses of multi-walled carbon nanotubes (MWCNTs) at different temperatures (800 and 900 °C) using various amounts of catalyst (2%, 5.5%, and 9.6%) to facilitate the process. We also tested the influence of injection rate of precursor and the necessity of material purification on thermoelectric properties of MWCNTs. The electrical conductivity, thermal conductivity, and Seebeck coefficient were measurement for all samples. Based on these parameters, the values of Power Factor and Figure of Merit were calculated. The results show that the most important parameter in the context of thermoelectric properties is purity of employed MWCNTs. To obtain appropriate material for this purpose optimum synthesis temperature and appropriate content of the catalyst must be selected. The study also reveals that post-synthetic purification of nanocarbon is essential to produce an attractive material for thermoelectrics.
- Subjects :
- Materials science
Context (language use)
Carbon nanotube
lcsh:Technology
Article
law.invention
Thermal conductivity
law
Electrical resistivity and conductivity
Seebeck coefficient
carbon nanotubes
thermoelectric properties
Thermoelectric effect
Figure of merit
General Materials Science
lcsh:Microscopy
lcsh:QC120-168.85
lcsh:QH201-278.5
lcsh:T
Thermoelectric materials
Chemical engineering
lcsh:TA1-2040
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
lcsh:TK1-9971
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 12
- Issue :
- 21
- Database :
- OpenAIRE
- Journal :
- Materials
- Accession number :
- edsair.doi.dedup.....08f59c1a53d8027ec593b1cd6cde87fb