Recovery of the intrinsic thermoelectric properties of CaMn0.98Nb0.02O3 in 2-terminal geometry using Ag infiltration
File(s)
Accepted version
Author(s)
Boldrin, D
Boldrin, P
Ruiz-Trejo, E
Cohen, LF
Type
Journal Article
Abstract
Oxide based thermoelectric (TE) materials offer several advantages over currently used intermetallic alloys due to their chemical and thermal stability at high temperatures, non-toxic elements, low cost and ease of manufacture. However, incorporation of oxides into thermoelectric generators (TEGs) is hindered by factors such as the requirement for polycrystalline materials over single crystals and the large electrode/ceramic contact resistances. The latter significantly limits the performance efficiency of a working TEG. Here we report the TE properties of Ag infiltrated polycrystalline CaMn0.98Nb0.02O3 ceramics. We demonstrate that by using this route the intrinsic TE properties of this material are fully recovered in 2-terminal geometry through Ag infiltration, thereby overcoming the electrode TEG contact problem. This synthetic route provides opportunities for bridging the performance gap between the intrinsic TE and TEG device properties of oxides.
Date Issued
2017-05-02
Date Acceptance
2017-04-27
Citation
Acta Materialia, 2017, 133, pp.68-72
ISSN
1359-6454
Publisher
Elsevier
Start Page
68
End Page
72
Journal / Book Title
Acta Materialia
Volume
133
Copyright Statement
© 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Grant Number
EP/J003085/1
EP/K503733/1
Subjects
Materials
0912 Materials Engineering
0913 Mechanical Engineering
Publication Status
Published