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Fabrication and characterization of nickel contacts for magnesium silicide based thermoelectric generators

de Boor, Johannes and Gloanec, Celine and Kolb, Hendrik and Sottong, Reinhard and Ziolkowski, Pawel and Müller, Eckhard (2015) Fabrication and characterization of nickel contacts for magnesium silicide based thermoelectric generators. Journal of Alloys and Compounds, 632, pp. 348-353. Elsevier. DOI: 10.1016/j.jallcom.2015.01.149 ISSN 0925-8388

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Abstract

Magnesium silicide based solid solutions are highly attractive materials for thermoelectric energy harvesting due to their abundance and excellent thermoelectric properties. Identification and testing of suitable contacts is – besides material optimization – the major challenge in the development of thermoelectric modules. We have applied Ni contacts on doped Mg2Si samples using a simple one-step sintering technique. These contacts were analyzed by combining microstructural analysis with spatially resolved and temperature dependent contact resistance measurements. We observe very good adhesion, homogeneous and low contact resistances <10 μΩ cm2. as well as good stability with temperature. Three different approaches for determining the contact resistances are compared and the respective errors are discussed.

Item URL in elib:https://elib.dlr.de/100042/
Document Type:Article
Title:Fabrication and characterization of nickel contacts for magnesium silicide based thermoelectric generators
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
de Boor, JohannesGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Gloanec, CelineGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Kolb, HendrikGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Sottong, ReinhardGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Ziolkowski, PawelGerman 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
Date:25 May 2015
Journal or Publication Title:Journal of Alloys and Compounds
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:632
DOI :10.1016/j.jallcom.2015.01.149
Page Range:pp. 348-353
Publisher:Elsevier
ISSN:0925-8388
Status:Published
Keywords:Electrode materials; Thermoelectric materials; Sintering; Electrical transport; Microstructure; Thermoelectric
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 09:46
Last Modified:06 Sep 2019 15:18

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