Tetrahedrite Nanocomposites for High Performance Thermoelectrics
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...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/5/351 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850052819192643584 |
|---|---|
| author | 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 António P. Gonçalves |
| author_facet | 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 António P. Gonçalves |
| author_sort | Rodrigo Coelho |
| collection | DOAJ |
| description | 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 MoS<sub>2</sub> 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 (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>z</mi><mi>T</mi></mrow></semantics></math></inline-formula>) 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. |
| format | Article |
| id | doaj-art-d1ea4ec7739941568820f4f4660ed8da |
| institution | DOAJ |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-d1ea4ec7739941568820f4f4660ed8da2025-08-20T02:52:42ZengMDPI AGNanomaterials2079-49912025-02-0115535110.3390/nano15050351Tetrahedrite Nanocomposites for High Performance ThermoelectricsRodrigo Coelho0Duarte Moço1Ana I. de Sá2Paulo P. da Luz3Filipe Neves4Maria de Fátima Cerqueira5Elsa B. Lopes6Francisco P. Brito7Panagiotis Mangelis8Theodora Kyratsi9António P. Gonçalves10Centro de Ciências e Tecnologias Nucleares (C2TN), Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, 2695-066 Bobadela, PortugalCentro de Ciências e Tecnologias Nucleares (C2TN), Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, 2695-066 Bobadela, PortugalLaboratório Nacional de Energia e Geologia, I.P., Campus do Lumiar, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, PortugalLaboratório Nacional de Energia e Geologia, I.P., Campus do Lumiar, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, PortugalLaboratório Nacional de Energia e Geologia, I.P., Campus do Lumiar, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, PortugalInternational Iberian Nanotechnology Laboratory, 4715-330 Braga, PortugalCentro de Ciências e Tecnologias Nucleares (C2TN), Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, 2695-066 Bobadela, PortugalMechanical Engineering and Resource Sustainability Center (MEtRICs), Departamento de Engenharia Mecânica (DEM), Universidade do Minho, 4800-058 Guimarães, PortugalDepartment of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, CyprusDepartment of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, CyprusCentro de Ciências e Tecnologias Nucleares (C2TN), Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, 2695-066 Bobadela, PortugalThermoelectric (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 MoS<sub>2</sub> 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 (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>z</mi><mi>T</mi></mrow></semantics></math></inline-formula>) 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.https://www.mdpi.com/2079-4991/15/5/351tetrahedrite nanocompositesMoS<sub>2</sub> nanoparticleshot-pressinglattice thermal conductivitytransport propertiesweighted mobility |
| spellingShingle | 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 António P. Gonçalves Tetrahedrite Nanocomposites for High Performance Thermoelectrics Nanomaterials tetrahedrite nanocomposites MoS<sub>2</sub> nanoparticles hot-pressing lattice thermal conductivity transport properties weighted mobility |
| title | Tetrahedrite Nanocomposites for High Performance Thermoelectrics |
| title_full | Tetrahedrite Nanocomposites for High Performance Thermoelectrics |
| title_fullStr | Tetrahedrite Nanocomposites for High Performance Thermoelectrics |
| title_full_unstemmed | Tetrahedrite Nanocomposites for High Performance Thermoelectrics |
| title_short | Tetrahedrite Nanocomposites for High Performance Thermoelectrics |
| title_sort | tetrahedrite nanocomposites for high performance thermoelectrics |
| topic | tetrahedrite nanocomposites MoS<sub>2</sub> nanoparticles hot-pressing lattice thermal conductivity transport properties weighted mobility |
| url | https://www.mdpi.com/2079-4991/15/5/351 |
| work_keys_str_mv | AT rodrigocoelho tetrahedritenanocompositesforhighperformancethermoelectrics AT duartemoco tetrahedritenanocompositesforhighperformancethermoelectrics AT anaidesa tetrahedritenanocompositesforhighperformancethermoelectrics AT paulopdaluz tetrahedritenanocompositesforhighperformancethermoelectrics AT filipeneves tetrahedritenanocompositesforhighperformancethermoelectrics AT mariadefatimacerqueira tetrahedritenanocompositesforhighperformancethermoelectrics AT elsablopes tetrahedritenanocompositesforhighperformancethermoelectrics AT franciscopbrito tetrahedritenanocompositesforhighperformancethermoelectrics AT panagiotismangelis tetrahedritenanocompositesforhighperformancethermoelectrics AT theodorakyratsi tetrahedritenanocompositesforhighperformancethermoelectrics AT antoniopgoncalves tetrahedritenanocompositesforhighperformancethermoelectrics |