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Nanomaterials
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Nanostructured Thermoelectric Materials
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Nanostructured Thermoelectric Materials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (15 April 2024) | Viewed by 2885

Special Issue Editors

Prof. Dr. Chia-Jyi Liu

E-Mail Website
Guest Editor
Department of Physics, National Changhua University of Education, Changhua, Taiwan
Interests: thermoelectric physics and materials; materials physics; structure–property relationship
Special Issues, Collections and Topics in MDPI journals
Dr. Ahmad Aquil

E-Mail Website
Assistant Guest Editor
Department of Physics, National Changhua University of Education, Changhua City, Taiwan
Interests: thermoelectric materials and devices; spintronics; magnetism; magnetic refrigeration; topological phenomena and DFT study on solids

Special Issue Information

Dear Colleagues,

In recent years, thermoelectric (TE) materials have drawn tremendous interest from researchers, due to their potential in providing alternative energy resources. The efficiency of TE materials is mostly reliant on one dimensionless parameter—the figure of merit (ZT) which depends on temperature, the Seebeck coefficient (S), electrical conductivity (σ), and thermal conductivity (κ). One approach to enhance the ZT value is to reduce the thermal conductivity, which can be accomplished by reducing the dimensions of the materials, for example, nanoparticles, thin films, and nanowires. In addition, it is desired to understand the pivotal role of the interactions between the charge carriers and phonons, as they play a decisive role in electric and thermal transport in TE materials.

Special attention will be given to the experimental approaches to achieve reliable estimates of the TE parameters. Knowing the amazing importance of thermoelectricity from the applied physics perspective, we would be highlighting the works based on the synthesis and characterizations of TE devices. In addition, our secondary focus of this Special Issue will be on modeling and theoretical simulation of their astonishing behaviors caused at the nanoscale regime.

The present Special Issue will cover the recent progress on low-dimensional TE materials and on methods for the exploration of the TE properties at the nanoscale.

Prof. Dr. Chia-Jyi Liu
Guest Editor

Dr. Ahmad Aquil
Assistant Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • low-dimensional thermoelectric materials
  • emerging thermoelectric devices: fabrication and characterizations
  • structure-property relationship
  • waste heat recovery
  • electronic transport
  • thermal transport
  • phonon–electron interactions
  • theoretical investigations

Published Papers (2 papers)

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Research

12 pages, 3195 KiB  
Article
Organic Thermoelectric Nanocomposites Assembled via Spraying Layer-by-Layer Method
by Seojin Kim, You Young Byun, InYoung Lee, Woohyeon Cho, Gyungho Kim, Mario Culebras, Junho Jang and Chungyeon Cho
Nanomaterials 2023, 13(5), 866; https://doi.org/10.3390/nano13050866 - 25 Feb 2023
Cited by 3 | Viewed by 1539
Abstract
Thermoelectric (TE) materials have been considered as a promising energy harvesting technology for sustainably providing power to electronic devices. In particular, organic-based TE materials that consist of conducting polymers and carbon nanofillers make a large variety of applications. In this work, we develop [...] Read more.
Thermoelectric (TE) materials have been considered as a promising energy harvesting technology for sustainably providing power to electronic devices. In particular, organic-based TE materials that consist of conducting polymers and carbon nanofillers make a large variety of applications. In this work, we develop organic TE nanocomposites via successive spraying of intrinsically conductive polymers such as polyaniline (PANi) and poly(3,4-ethylenedioxy- thiophene):poly(styrenesulfonate) (PEDOT:PSS) and carbon nanofillers, and single-walled carbon nanotubes (SWNT). It is found that the growth rate of the layer-by-layer (LbL) thin films, which comprise a PANi/SWNT-PEDOT:PSS repeating sequence, made by the spraying method is greater than that of the same ones assembled by traditional dip coating. The surface structure of multilayer thin films constructed by the spraying approach show excellent coverage of highly networked individual and bundled SWNT, which is similarly to what is observed when carbon nanotubes-based LbL assemblies are formed by classic dipping. The multilayer thin films via the spray-assisted LbL process exhibit significantly improved TE performances. A 20-bilayer PANi/SWNT-PEDOT:PSS thin film (~90 nm thick) yields an electrical conductivity of 14.3 S/cm and Seebeck coefficient of 76 μV/K. These two values translate to a power factor of 8.2 μW/m·K2, which is 9 times as large as the same films fabricated by a classic immersion process. We believe that this LbL spraying method will open up many opportunities in developing multifunctional thin films for large-scaled industrial use due to rapid processing and the ease with which it is applied. Full article
(This article belongs to the Special Issue Nanostructured Thermoelectric Materials)
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9 pages, 1333 KiB  
Article
Phonon Dominated Thermal Transport in Metallic Niobium Diselenide from First Principles Calculations
by René Contreras, Diego Celentano, Tengfei Luo, Zeyu Liu and J. O. Morales-Ferreiro
Nanomaterials 2023, 13(2), 315; https://doi.org/10.3390/nano13020315 - 12 Jan 2023
Viewed by 1838
Abstract
Niobium diselenide (NbSe2) is a layered transition metal dichalcogenide material which possesses unique electrical and superconducting properties for future nanodevices. While the superconducting, electrical, and bulk thermal transport properties of NbSe2 have been widely studied, the in-plane thermal transport property [...] Read more.
Niobium diselenide (NbSe2) is a layered transition metal dichalcogenide material which possesses unique electrical and superconducting properties for future nanodevices. While the superconducting, electrical, and bulk thermal transport properties of NbSe2 have been widely studied, the in-plane thermal transport property of NbSe2, which is important for potential thermoelectric applications, has not been thoroughly investigated. In this report, we study the lattice in-plane thermal transport of 2D NbSe2 by solving the phonon Boltzmann transport equation with the help of the first principles calculation. The thermal conductivity obtained at room temperature is 12.3 W/mK. A detailed analysis shows that the transverse acoustic phonon dominates the lattice thermal transport, and an anomalously small portion of electron contribution to the total thermal conductivity is observed for this metallic phase. The results agree well with experimental measurements and provide detailed mode-by-mode thermal conductivity contribution from different phonon modes. This study can provide useful information for integrating NbSe2 in nanodevices where both electrical and thermal properties are critical, showing great potential for integrating monolayer NbSe2 to thermoelectric devices. Full article
(This article belongs to the Special Issue Nanostructured Thermoelectric Materials)
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