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Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties

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...

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Autores principales: Kumanek, Bogumiła, Stando, Grzegorz, Wróbel, Paweł S., Janas, Dawid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862382/
https://www.ncbi.nlm.nih.gov/pubmed/31671679
http://dx.doi.org/10.3390/ma12213567
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author Kumanek, Bogumiła
Stando, Grzegorz
Wróbel, Paweł S.
Janas, Dawid
author_facet Kumanek, Bogumiła
Stando, Grzegorz
Wróbel, Paweł S.
Janas, Dawid
author_sort Kumanek, Bogumiła
collection PubMed
description 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.
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spelling pubmed-68623822019-12-05 Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties Kumanek, Bogumiła Stando, Grzegorz Wróbel, Paweł S. Janas, Dawid Materials (Basel) Article 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. MDPI 2019-10-30 /pmc/articles/PMC6862382/ /pubmed/31671679 http://dx.doi.org/10.3390/ma12213567 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kumanek, Bogumiła
Stando, Grzegorz
Wróbel, Paweł S.
Janas, Dawid
Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
title Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
title_full Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
title_fullStr Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
title_full_unstemmed Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
title_short Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties
title_sort impact of synthesis parameters of multi-walled carbon nanotubes on their thermoelectric properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862382/
https://www.ncbi.nlm.nih.gov/pubmed/31671679
http://dx.doi.org/10.3390/ma12213567
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