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Thermoelectric Materials for Sustainable Applications

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 1742

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Special Issue Editors

Prof. Dr. Paolo Mele

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Guest Editor

College of Engineering, Shibaura Institute of Technology, Saitama 337-8570, Japan
Interests: thin films; oxides; superconductors; thermoelectrics; energy materials; heat transfer; vortex matter; sustainability
Special Issues, Collections and Topics in MDPI journals

Dr. Giovanna Latronico

E-Mail Website
Guest Editor

SIT Research Laboratories, Shibaura Institute of Technology, Saitama 337-8570, Japan
Interests: energy materials; oxides; skutterudites; thin films; thermoelectrics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The journals “Materials”, “Coatings”, and “Inorganics” invite submissions of original research articles for a joint Special Issue on "Thermoelectric Materials for Sustainable Applications". With the increasing demand for clean energy sources and the need for the more efficient use of energy, thermoelectric materials have gained significant attention as a promising technology to convert waste heat into useful electricity. This Special Issue aims to collate the latest research findings in the field of thermoelectric materials, with a focus on their sustainable applications.

We particularly encourage contributions from colleagues who will attend the symposium B1 "Thermoelectric Materials for Sustainable Applications" IUMRS-ICA/MRM conference (Kyoto, December 11th–16th, 2023).

Topics of interest include, but are not limited to:

the synthesis and characterization of new thermoelectric materials; the modelling and simulation of thermoelectric materials; the development of advanced thermoelectric devices; the integration of thermoelectric materials in energy systems; the recycling and sustainable production of thermoelectric materials; the life cycle analysis of thermoelectric materials and systems; and the economic and environmental assessment of thermoelectric systems.

We welcome both theoretical and experimental studies, as well as review articles, that provide comprehensive and up-to-date overviews of specific topics within the scope of the Special Issue.

All submissions must be original research articles that have not been previously published or are not under consideration for publication elsewhere. All papers will be peer-reviewed by independent experts in the field. The three journals adhere to high standards of scientific quality and ethical standards in publishing. For information on submission guidelines and formatting requirements, please visit the journals’ websites.

Please contact us if you have any questions on the submission process.

We look forward to receiving your submissions!

You may choose our Joint Special Issue in Coatings and Joint Special Issue in Inorganics.

Sincerely,
Prof. Dr. Paolo Mele
Dr. Giovanna Latronico
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. Materials 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 2600 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.

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11 pages, 5361 KiB

Open AccessArticle

Synthesis and Transport Properties of ZnSnP_2-yAs_y Chalcopyrite Solid Solutions

by Daniel Ramirez, Luke T. Menezes and Holger Kleinke

Materials 2024, 17(8), 1712; https://doi.org/10.3390/ma17081712 - 09 Apr 2024

Viewed by 237

Abstract

This work focuses on the synthesis and properties of quaternary ZnSnP_2-yAs_y chalcopyrite solid solutions. Full miscibility of the solid solution is achieved using ball milling followed by hot press sintering. The measured electrical conductivity increases substantially with As substitution from 0.03 S cm⁻¹ for ZnSnP₂ to 10.3 S cm⁻¹ for ZnSnAs₂ at 715 K. Band gaps calculated from the activation energies show a steady decrease with increasing As concentration from 1.4 eV for ZnSnP₂ to 0.7 eV for ZnSnAs₂. The Seebeck coefficient decreases significantly with As substitution from nearly 1000 μV K⁻¹ for ZnSnP₂ to −100 μV K⁻¹ for ZnSnAs₂ at 650 K. Thermal conductivity is decreased for the solid solutions due to alloy phonon scattering, compared to the end members with y = 0 and y = 2, with the y = 0.5 and y = 1.0 samples exhibiting the lowest values of 1.4 W m⁻¹ K⁻¹ at 825 K. Figure of merit values are increased for the undoped solid solutions at lower temperatures when compared to the end members due to the decreased thermal conductivity, with the y = 0.5 sample reaching zT = 1.6 × 10⁻³ and y = 1 reaching 2.1 × 10⁻³ at 700 K. The largest values of the figure of merit zT for the undoped series was found for y = 2 with zT = 2.8 × 10⁻³ at 700 K due to the increasing n-type Seebeck coefficient. Boltztrap calculations reveal that p-doping could yield zT values above unity at 800 K in case of ZnSnAs₂, comparable with ZnSnP₂. Full article

(This article belongs to the Special Issue Thermoelectric Materials for Sustainable Applications)

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13 pages, 6627 KiB

Open AccessArticle

Enhanced Power Factor and Ultralow Lattice Thermal Conductivity Induced High Thermoelectric Performance of BiCuTeO/BiCuSeO Superlattice

by Xuewen Yang, Zhiqian Sun, Guixian Ge and Jueming Yang

Materials 2023, 16(12), 4318; https://doi.org/10.3390/ma16124318 - 11 Jun 2023

Cited by 1 | Viewed by 1161

Abstract

Based on the first-principles calculations, the electronic structure and transport properties of BiMChO (M=Cu and Ag, Ch=S, Se, and Te) superlattices have been studied. They are all semiconductors with indirect band gaps. The increased band gap and decreased band dispersion near the valence band maximum (VBM) lead to the lowest electrical conductivity and the lowest power factor for p-type BiAgSeO/BiCuSeO. The band gap value of BiCuTeO/BiCuSeO decreases because of the up-shifted Fermi level of BiCuTeO compared with BiCuSeO, which would lead to relatively high electrical conductivity. The converged bands near VBM can produce a large effective mass of density of states (DOS) without explicitly reducing the mobility µ for p-type BiCuTeO/BiCuSeO, which means a relatively large Seebeck coefficient. Therefore, the power factor increases by 15% compared with BiCuSeO. The up-shifted Fermi level leading to the band structure near VBM is dominated by BiCuTeO for the BiCuTeO/BiCuSeO superlattice. The similar crystal structures bring out the converged bands near VBM along the high symmetry points

Γ - X

and

Z - R

. Further studies show that BiCuTeO/BiCuSeO possesses the lowest lattice thermal conductivity among all the superlattices. These result in the ZT value of p-type BiCuTeO/BiCuSeO increasing by over 2 times compared with BiCuSeO at 700 K. Full article