Recovery of the intrinsic thermoelectric properties of CaMn0.98Nb0.02O3 in 2-terminal geometry using Ag infiltration

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Title: Recovery of the intrinsic thermoelectric properties of CaMn0.98Nb0.02O3 in 2-terminal geometry using Ag infiltration
Authors: Boldrin, D
Boldrin, P
Ruiz-Trejo, E
Cohen, LF
Item 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.
Issue Date: 2-May-2017
Date of Acceptance: 27-Apr-2017
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
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/J003085/1
Keywords: Materials
0912 Materials Engineering
0913 Mechanical Engineering
Publication Status: Published
Appears in Collections:Physics
Experimental Solid State
Earth Science and Engineering
Faculty of Natural Sciences

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