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Thermoelectric Properties of Nanostructured CoSb<sub>3</sub>-Ceramic Composites

Stiewe, Christian and He, Zeming and Li, Shanghua and Platzek, Dieter and Toprak, Muhammet and Müller, Eckhard and Muhammed, Mamoun (2006) Thermoelectric Properties of Nanostructured CoSb<sub>3</sub>-Ceramic Composites. In: Proceedings of the 4th European Conference on Thermoelectrics. 4th European Conference on Thermoelectrics, 9.-11. April 2006, Cardiff, Wales, UK.

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Abstract

Thermal conductivity plays an important role for the effectiveness of CoSb3 Skutterudites as thermoelectric materials. The possibility of improving the figure-of-merit of unfilled CoSb3 by nanostructuring has been reported earlier. A key role in the preparation of these materials is the powder compaction by hot pressing to achieve dense solids without loosing the nanostructure by sintering processes. A new approach to this task is the usage of CoSb3-ceramic composites. ZrO2 powder with grain sizes on the nanometer scale is added to the Skutterudite material, acting as inert filler between the Skutterudite particles, thus reducing sintering. In the present work we investigate in more detail the effect of various pressing conditions on the thermoelectric properties (σ, κ, S) of both pure CoSb3 and alloyed material Co1- xNix(Sb1-yTey)3. These results are compared to those obtained from similar material with addition of ceramic powder.

Item URL in elib:https://elib.dlr.de/45931/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Thermoelectric Properties of Nanostructured CoSb<sub>3</sub>-Ceramic Composites
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stiewe, ChristianUNSPECIFIEDUNSPECIFIED
He, ZemingUNSPECIFIEDUNSPECIFIED
Li, ShanghuaKTH Stockholm, SwedenUNSPECIFIED
Platzek, DieterUNSPECIFIEDUNSPECIFIED
Toprak, MuhammetKTH Stockholm, SwedenUNSPECIFIED
Müller, EckhardUNSPECIFIEDUNSPECIFIED
Muhammed, MamounKTH Stockholm, SwedenUNSPECIFIED
Date:11 April 2006
Journal or Publication Title:Proceedings of the 4th European Conference on Thermoelectrics
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Rowe, D.M.UNSPECIFIED
Status:Published
Keywords:thermoelectric materials, Skutterudites, doping, thermoelectric properties, composites
Event Title:4th European Conference on Thermoelectrics
Event Location:Cardiff, Wales, UK
Event Type:international Conference
Event Dates:9.-11. April 2006
Organizer:Cardiff School of Engineering
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional Ceramics
Deposited By: Stiewe, Dr.rer.nat Christian
Deposited On:06 Dec 2006
Last Modified:27 Apr 2009 13:17

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