elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Thermoelectric properties and stability of Ba3Cu16 − xSe11 − yTey

Jafarzadeh, Parisa and Assoud, Abdeljalil and Ramirez, Daniel and Farahi, Nader and Zou, Tianze and Müller, Eckhard and Kycia, Jan B. and Kleinke, Holger (2019) Thermoelectric properties and stability of Ba3Cu16 − xSe11 − yTey. Journal of Applied Physics. American Institute of Physics (AIP). DOI: 10.1063/1.5110043 ISSN 0021-8979

[img] PDF - Registered users only until July 2021 - Published version
2MB

Abstract

Ba3Cu16 − xSe11 − yTey materials were synthesized with different compositions by a melting and slow cooling process. Measurement of the thermoelectric properties revealed changes during repeated measurements of the same samples. This scenario is different from the case of the isostructural sulfide variants, where the physical properties were consistently reproducible under the measurement conditions applied. Further investigations including single crystal studies after the measurements proved that this is a consequence of different Cu ion conductivity in selenides and sulfides. The reproducibility of the data was investigated by varying the maximum temperature as well as the current density. The stability of these selenides was highly dependent on the temperature; decreasing the highest measurement temperature led to full reproducibility. Finally, while the selenides exhibited larger electrical conductivity than the sulfides, their figure-of-merit zT only reached a maximum value of 0.49, compared to 0.88 of the sulfides, mostly caused by the smaller Seebeck values of the selenides.

Item URL in elib:https://elib.dlr.de/130557/
Document Type:Article
Title:Thermoelectric properties and stability of Ba3Cu16 − xSe11 − yTey
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jafarzadeh, ParisaDepartment 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
Ramirez, DanielDepartment of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Farahi, NaderGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Zou, TianzeDepartment of Physics and Astronomy and Guelph-Waterloo Physics Institute, University of Waterloo, Waterloo, Ontario N2L 3G1, CanadaUNSPECIFIED
Müller, EckhardGerman aerospace center, Institute of materials research, Köln, Germany and Institute for inorganic and analytical chemistry, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen, GermanyUNSPECIFIED
Kycia, Jan B.Department of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Kleinke, HolgerDepartment of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, CanadaUNSPECIFIED
Date:11 July 2019
Journal or Publication Title:Journal of Applied Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1063/1.5110043
Publisher:American Institute of Physics (AIP)
ISSN:0021-8979
Status:Published
Keywords:Thermoelectric properties; stability; selenides; sulfides
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:15 Nov 2019 12:57
Last Modified:18 Dec 2019 04:19

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.