Nanoscale Thermoelectric Materials: Advanced Synthesis and Characterisation Approaches

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: 13 August 2025 | Viewed by 831

Special Issue Editors


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Guest Editor
Condensed Matter and Materials Physics, Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
Interests: electron microscopy; energy/environmental nanomaterials; catalysis; semiconductors; thermoelectrics; electron crystallography; EM image processing & simulation; electron spectroscopy-channeling; solar cells; CCUS nanomaterials

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Guest Editor
Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
Interests: synthesis of energy-related materials; thermoelectric materials; nanomaterials and nanocomposites; powder technology - ball milling; consolidation techniques; additive manufacturing

Special Issue Information

Dear Colleagues,

The amount of energy nowadays converted into waste heat accounts for a substantial percentage and is predicted to reach more than 50% of the total energy input globally. Utilization, even partly of such enormous energy amount is of imminent importance, considering the energy issues on a global scale and environmental effects. In this aspect, thermoelectric (TEs) materials and devices have been widely exploited in the last decades to address this energy conversion and harvesting challenging issue. Among the most promising solutions for increasing their efficiency, nanostructuring approaches have been widely exploited, aiming predominately into decreasing their thermal conductivity, whereas preserving a high Seebeck coefficient and low electrical resistivity at the same time.

The collection of scientific articles in this Special Issue of Nanomaterials aims to address such nanostructuring approaches in advanced TEs. Research topics may include (though not limited to) novel synthesis routes, involving environmentally friendly starting materials or sustainability concepts, advanced characterisation approaches in the micro-, nano- and atomic scales by typical laboratory equipment or large scale facilities alike and detailed TE property measurements. The Special Issue would comprise of high impact contributions in the form of research papers, reviews and/or short communications of emerging topics in TEs research.

Dr. Andreas Delimitis
Prof. Dr. Theodora Kyratsi
Guest Editors

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Keywords

  • thermoelectrics (TEs)
  • nanomaterials
  • electron microscopy
  • nanostructural properties
  • phase separation
  • doping
  • TE properties
  • thermal conductivity
  • figure of merit
  • environmental sustainability
  • energy harvesting

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Published Papers (1 paper)

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Research

27 pages, 8066 KiB  
Article
Tetrahedrite Nanocomposites for High Performance Thermoelectrics
by Rodrigo Coelho, Duarte Moço, Ana I. de Sá, Paulo P. da Luz, Filipe Neves, Maria de Fátima Cerqueira, Elsa B. Lopes, Francisco P. Brito, Panagiotis Mangelis, Theodora Kyratsi and António P. Gonçalves
Nanomaterials 2025, 15(5), 351; https://doi.org/10.3390/nano15050351 - 24 Feb 2025
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Abstract
Thermoelectric (TE) materials offer a promising solution to reduce green gas emissions, decrease energy consumption, and improve energy management due to their ability to directly convert heat into electricity and vice versa. Despite their potential, integrating new TE materials into bulk TE devices [...] Read more.
Thermoelectric (TE) materials offer a promising solution to reduce green gas emissions, decrease energy consumption, and improve energy management due to their ability to directly convert heat into electricity and vice versa. Despite their potential, integrating new TE materials into bulk TE devices remains a challenge. To change this paradigm, the preparation of highly efficient tetrahedrite nanocomposites is proposed. Tetrahedrites were first prepared by solid state reaction, followed by the addition of MoS2 nanoparticles (NPs) and hot-pressing at 848 K with 56 MPa for a duration of 90 min to obtain nanocomposites. The materials were characterized by XRD, SEM-EDS, and Raman spectroscopy to evaluate the composites’ matrix and NP distribution. To complement the results, lattice thermal conductivity and the weighted mobility were evaluated. The NPs’ addition to the tetrahedrites resulted in an increase of 36% of the maximum figure of merit (zT) comparatively with the base material. This increase is explained by the reduction of the material’s lattice thermal conductivity while maintaining its mobility. Such results highlight the potential of nanocomposites to contribute to the development of a new generation of TE devices based on more affordable and efficient materials. Full article
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