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Simultaneous measurement of all thermoelectric properties of bulk materials in the temperature range 300–600 K

Kolb, Hendrik and Dasgupta, Titas and Zabrocki, Knud and Müller, Eckhard and de Boor, Johannes (2015) Simultaneous measurement of all thermoelectric properties of bulk materials in the temperature range 300–600 K. Review of Scientific Instruments, 86, 073901. American Institute of Physics (AIP). DOI: 10.1063/1.4926404 ISSN 0034-6748

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Abstract

Thermoelectric materials can directly convert heat into electrical energy. The characterization of different materials is an important part in thermoelectric materials research to improve their properties. Usually, different methods and setups are combined for the temperature dependent determination of all thermoelectric key quantities — Seebeck coefficient, electrical conductivity, and thermal conductivity. Here, we present a measurement system for the simultaneous determination of all of these quantities plus the direct determination of the figure of merit by means of the Harman method (zT)_H in a temperature range from room temperature up to 600 K. A simultaneous measurement saves time and reduces the measurement error, and the change of all material properties can be monitored even for unstable materials. Thermal conductivity measurements are inherently affected by undesired thermal losses, in particular, through radiation at higher temperatures. We show a simple experimental approach to measure radiation losses and correct for those. Comparative measurements on traditional systems show good agreement for all measured quantities.

Item URL in elib:https://elib.dlr.de/100078/
Document Type:Article
Title:Simultaneous measurement of all thermoelectric properties of bulk materials in the temperature range 300–600 K
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kolb, HendrikGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Dasgupta, TitasDepartment of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, IndiaUNSPECIFIED
Zabrocki, KnudGerman 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
de Boor, JohannesGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Date:13 July 2015
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:86
DOI :10.1063/1.4926404
Page Range:073901
Publisher:American Institute of Physics (AIP)
ISSN:0034-6748
Status:Published
Keywords:Thermal conductivity; Electrical conductivity; Thermoelectric effects; Electric measurements; Heaters
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Fahrzeugenergiesystem III (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Zabrocki, Dr. Knud
Deposited On:27 Nov 2015 10:12
Last Modified:06 Sep 2019 15:29

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