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High thermoelectric performance of Ba3Cu16−x(S,Te)11

Jafarzadeh, Parisa and Oudah, Mohamed and Assoud, Abdeljalil and Farahi, Nader and Müller, Eckhard and Kleinke, Holger (2018) High thermoelectric performance of Ba3Cu16−x(S,Te)11. Journal of Materials Chemistry C. Royal Society of Chemistry. DOI: 10.1039/C8TC05058A ISSN 2050-7526

Full text not available from this repository.

Abstract

Inspired by the high figure-of-merit, zT, of β-Cu2Se at elevated temperatures, the thermoelectric properties of the hot-pressed sulphide–tellurides Ba3Cu16−x(S,Te)11 were studied. These materials crystallize in a rhombohedral structure, space group R[3 with combining macron]m. Hot-pressed Ba3Cu15.3S7.5Te3.5 has the highest power factor, 4.6 μW cm−1 K−2, which is almost 50% higher than that of the best cold-pressed sample, Ba3Cu16S9Te2 with 2.4 μW cm−1 K−2 at 700 K. These quaternary sulphide–tellurides are bestowed with an extraordinarily low total thermal conductivity, which is below 0.6 W m−1 K−1 throughout the entire studied temperature range. In addition, their higher stability at elevated temperatures compared to Cu2S and β-Cu2Se with high zT values renders them more feasible for thermoelectric devices. Among the three studied materials, the one with the highest Te content, Ba3Cu15.3S7.5Te3.5, exhibits the lowest thermal conductivity and the highest electrical conductivity, which results in zT = 0.88 at 745 K.

Item URL in elib:https://elib.dlr.de/124063/
Document Type:Article
Title:High thermoelectric performance of Ba3Cu16−x(S,Te)11
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jafarzadeh, ParisaDepartment of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Oudah, MohamedDepartment of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Assoud, AbdeljalilDepartment of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Farahi, NaderGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Müller, EckhardGerman Aerospace Center, Institute of Materials Research, Köln, Germany and Justus Liebig University Giessen, Institute of Inorganic and Analytical Chemistry, 35392 Giessen, GermanyUNSPECIFIED
Kleinke, HolgerDepartment of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Date:5 October 2018
Journal or Publication Title:Journal of Materials Chemistry C
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1039/C8TC05058A
Publisher:Royal Society of Chemistry
ISSN:2050-7526
Status:Published
Keywords:Thermoelectric, Ba3Cu16−x(S,Te)11
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Storage)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Yasseri, Mohammad
Deposited On:14 Dec 2018 09:17
Last Modified:14 Dec 2018 09:17

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