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Nanomaterials
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Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications
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Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications

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

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 10102

Special Issue Editors

Dr. Shengqiang Bai

E-Mail Website
Guest Editor
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Interests: thermoelectric materials; thermoelectric device; energy conversion and utilization; thermal management; interface materials
Prof. Dr. Zihua Wu

E-Mail Website
Guest Editor
School of Urban Development and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China
Interests: thermoelectric materials; thermal management; interface materials

Special Issue Information

Dear Colleagues,

Thermoelectric techniques have been achieving fruitful research results in the past decades as one of the solutions for improving the efficiency of energy consumption by turning waste heat directly into electric power. For them to be applied industrially, however, the performance and reliability of thermoelectric materials and devices must be enhanced in terms of their design, fabrication, and application processes. Nanotechnology has been approved as an effective way of tuning thermal and electrical transport properties and mechanical performance in thermoelectric materials and devices.

We invite authors to contribute original research and communication articles or comprehensive review articles covering the most recent progress and new developments in the design, fabrication, and application of nanomaterials in thermoelectric materials, devices, and relative applications in thermal management and energy utilization.

The topics of interest to this Special Issue include but are not limited to thermoelectric performance optimization by nanotechnology (i.e., nanostructure, nanocomposites), nanomaterials for mechanical performance enhancement in thermoelectric materials, nanomaterials for thermal management and utilization, nanofluid use in thermoelectric devices, thermal interface materials, and phase change materials in energy conversion and hybrid devices.

We look forward to receiving your contributions.

Dr. Shengqiang Bai
Prof. Dr. Zihua Wu
Guest Editors

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

  • nanostructure and nanocomposites
  • carrier and phonon transportation
  • thermal management and utilization
  • energy conversion and hybrid
  • mechanical performance optimization
  • thermal interface materials
  • phase change materials
  • thermoelectric materials
  • nanofluid

Published Papers (5 papers)

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Research

21 pages, 7431 KiB  
Article
Mechanochemical Synthesis of Sustainable Ternary and Quaternary Nanostructured Cu2SnS3, Cu2ZnSnS4, and Cu2ZnSnSe4 Chalcogenides for Thermoelectric Applications
by Himanshu Nautiyal, Ketan Lohani, Binayak Mukherjee, Eleonora Isotta, Marcelo Augusto Malagutti, Narges Ataollahi, Ilaria Pallecchi, Marina Putti, Scott T. Misture, Luca Rebuffi and Paolo Scardi
Nanomaterials 2023, 13(2), 366; https://doi.org/10.3390/nano13020366 - 16 Jan 2023
Cited by 13 | Viewed by 2453
Abstract
Copper-based chalcogenides have emerged as promising thermoelectric materials due to their high thermoelectric performance, tunable transport properties, earth abundance and low toxicity. We have presented an overview of experimental results and first-principal calculations investigating the thermoelectric properties of various polymorphs of Cu2 [...] Read more.
Copper-based chalcogenides have emerged as promising thermoelectric materials due to their high thermoelectric performance, tunable transport properties, earth abundance and low toxicity. We have presented an overview of experimental results and first-principal calculations investigating the thermoelectric properties of various polymorphs of Cu2SnS3 (CTS), Cu2ZnSnS4 (CZTS), and Cu2ZnSnSe4 (CZTSe) synthesized by high-energy reactive mechanical alloying (ball milling). Of particular interest are the disordered polymorphs of these materials, which exhibit phonon-glass–electron-crystal behavior—a decoupling of electron and phonon transport properties. The interplay of cationic disorder and nanostructuring leads to ultra-low thermal conductivities while enhancing electronic transport. These beneficial transport properties are the consequence of a plethora of features, including trap states, anharmonicity, rattling, and conductive surface states, both topologically trivial and non-trivial. Based on experimental results and computational methods, this report aims to elucidate the details of the electronic and lattice transport properties, thereby confirming that the higher thermoelectric (TE) performance of disordered polymorphs is essentially due to their complex crystallographic structures. In addition, we have presented synchrotron X-ray diffraction (SR-XRD) measurements and ab initio molecular dynamics (AIMD) simulations of the root-mean-square displacement (RMSD) in these materials, confirming anharmonicity and bond inhomogeneity for disordered polymorphs. Full article
(This article belongs to the Special Issue Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications)
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13 pages, 4719 KiB  
Article
A Bi2Te3-Filled Nickel Foam Film with Exceptional Flexibility and Thermoelectric Performance
by Taifeng Shi, Mengran Chen, Zhenguo Liu, Qingfeng Song, Yixiang Ou, Haoqi Wang, Jia Liang, Qihao Zhang, Zhendong Mao, Zhiwen Wang, Jingyvan Zheng, Qingchen Han, Kafil M. Razeeb and Peng-an Zong
Nanomaterials 2022, 12(10), 1693; https://doi.org/10.3390/nano12101693 - 16 May 2022
Cited by 9 | Viewed by 2054
Abstract
The past decades have witnessed surging demand for wearable electronics, for which thermoelectrics (TEs) are considered a promising self-charging technology, as they are capable of converting skin heat into electricity directly. Bi2Te3 is the most-used TE material at room temperature, [...] Read more.
The past decades have witnessed surging demand for wearable electronics, for which thermoelectrics (TEs) are considered a promising self-charging technology, as they are capable of converting skin heat into electricity directly. Bi2Te3 is the most-used TE material at room temperature, due to a high zT of ~1. However, it is different to integrate Bi2Te3 for wearable TEs owing to its intrinsic rigidity. Bi2Te3 could be flexible when made thin enough, but this implies a small electrical and thermal load, thus severely restricting the power output. Herein, we developed a Bi2Te3/nickel foam (NiFoam) composite film through solvothermal deposition of Bi2Te3 nanoplates into porous NiFoam. Due to the mesh structure and ductility of Ni Foam, the film, with a thickness of 160 μm, exhibited a high figure of merit for flexibility, 0.016, connoting higher output. Moreover, the film also revealed a high tensile strength of 12.7 ± 0.04 MPa and a maximum elongation rate of 28.8%. In addition, due to the film’s high electrical conductivity and enhanced Seebeck coefficient, an outstanding power factor of 850 μW m−1 K−2 was achieved, which is among the highest ever reported. A module fabricated with five such n-type legs integrated electrically in series and thermally in parallel showed an output power of 22.8 nW at a temperature gap of 30 K. This work offered a cost-effective avenue for making highly flexible TE films for power supply of wearable electronics by intercalating TE nanoplates into porous and meshed-structure materials. Full article
(This article belongs to the Special Issue Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications)
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11 pages, 6119 KiB  
Article
Enhanced Thermoelectric Properties of Te Doped Polycrystalline Sn0.94Pb0.01Se
by Fujin Li, Lin Bo, Ruipeng Zhang, Sida Liu, Junliang Zhu, Min Zuo and Degang Zhao
Nanomaterials 2022, 12(9), 1575; https://doi.org/10.3390/nano12091575 - 06 May 2022
Cited by 2 | Viewed by 1505
Abstract
Thermoelectric materials can directly convert heat and electricity, which is a kind of promising energy material. In view of cost and mechanical properties, polycrystalline SnSe material with high zT value is greatly desired. In this study, polycrystalline Sn0.94Pb0.01Se1- [...] Read more.
Thermoelectric materials can directly convert heat and electricity, which is a kind of promising energy material. In view of cost and mechanical properties, polycrystalline SnSe material with high zT value is greatly desired. In this study, polycrystalline Sn0.94Pb0.01Se1-xTex samples were prepared by the vacuum melting–hot pressing sintering method. Sn vacancies, Pb and Te atoms were simultaneously introduced into the polycrystalline SnSe. The power factor of Sn0.94Pb0.01Se1-xTex samples was decreased, which could be attributed to the generation of n-type semiconductor SnSe2. In addition, the phonons were strongly scattered by point defects and dislocations, which led to the decrease of thermal conductivity—from 0.43 Wm−1K−1 to 0.29 Wm−1K−1 at 750 K. Finally, the polycrystalline Sn0.94Pb0.01Se0.96Te0.04 sample achieved the maximum zT value of 0.60 at 750 K. Full article
(This article belongs to the Special Issue Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications)
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10 pages, 1373 KiB  
Article
Coupling Electronic and Phonon Thermal Transport in Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) Nanofibers
by Lan Dong, Chengpeng Bao, Shiqian Hu, Yuanyuan Wang, Zihua Wu, Huaqing Xie and Xiangfan Xu
Nanomaterials 2022, 12(8), 1282; https://doi.org/10.3390/nano12081282 - 09 Apr 2022
Cited by 2 | Viewed by 1362
Abstract
The thermal transport of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) nanofiber is contributed by the electronic component of thermal conduction and the phonon component of thermal conduction. The relationship between the electrical conductivity and thermal conductivity of these conducting polymers is of great interest in thermoelectric energy [...] Read more.
The thermal transport of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) nanofiber is contributed by the electronic component of thermal conduction and the phonon component of thermal conduction. The relationship between the electrical conductivity and thermal conductivity of these conducting polymers is of great interest in thermoelectric energy conversation. In this work, we characterized the axial electrical conductivities and thermal conductivities of the single PEDOT:PSS nanofibers and found that the Lorenz number L is larger than Sommerfeld value L0 at 300 K. In addition, we found that the L increased significantly in the low-temperature region. We consider that this trend is due to the bipolar contribution of conducting polymers with low-level electrical conductivity and the increasing trend of the electronic contribution to thermal conductivity in low-temperature regions. Full article
(This article belongs to the Special Issue Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications)
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10 pages, 3424 KiB  
Article
Enhanced Thermoelectric Performance of Cu2Se via Nanostructure and Compositional Gradient
by Lin Bo, Fujin Li, Yangbo Hou, Min Zuo and Degang Zhao
Nanomaterials 2022, 12(4), 640; https://doi.org/10.3390/nano12040640 - 14 Feb 2022
Cited by 10 | Viewed by 2029
Abstract
Forming co-alloying solid solutions has long been considered as an effective strategy for improving thermoelectric performance. Herein, the dense Cu2−x(MnFeNi)xSe (x = 0–0.09) with intrinsically low thermal conductivity was prepared by a melting-ball milling-hot pressing process. The [...] Read more.
Forming co-alloying solid solutions has long been considered as an effective strategy for improving thermoelectric performance. Herein, the dense Cu2−x(MnFeNi)xSe (x = 0–0.09) with intrinsically low thermal conductivity was prepared by a melting-ball milling-hot pressing process. The influences of nanostructure and compositional gradient on the microstructure and thermoelectric properties of Cu2Se were evaluated. It was found that the thermal conductivity decreased from 1.54 Wm−1K−1 to 0.64 Wm−1K−1 at 300 K via the phonon scattering mechanisms caused by atomic disorder and nano defects. The maximum zT value for the Cu1.91(MnFeNi)0.09Se sample was 1.08 at 750 K, which was about 27% higher than that of a pristine sample. Full article
(This article belongs to the Special Issue Thermoelectric Nanocomposites and Devices: Design, Fabrication and Applications)
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