Effective role of filling fraction control in p-type CexFe3CoSb12 skutterudite thermoelectric materials

Sang Hyun Bae; Kyu Hyoung Lee; Soon Mok Choi

doi:10.1016/j.intermet.2018.11.010

Effective role of filling fraction control in p-type Ce_xFe₃CoSb₁₂ skutterudite thermoelectric materials

Sang Hyun Bae, Kyu Hyoung Lee, Soon Mok Choi

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

p-type Ce-filled Fe_4-xCo_xSb₁₂ skutterudite is a promising thermoelectric material with high thermal-to-electric conversion efficiency at mid-to-high temperatures. However, fabrication of a complete single phase is required in order to secure performance reliability due to the charge state of Ce. We herein report that optimization of the Ce filling fraction according to the compositions and synthetic processes is a critical factor to develop a manufacturing process that can be applied to massive production of single phase p-type Ce-filled skutterudite. The durable maximum zT (thermoelectric figure of merit) value of Ce-filled skutterudites fabricated here was 0.81 at 723 K in Ce_0.86Fe₃CoSb_12.09.

Original language	English
Pages (from-to)	44-47
Number of pages	4
Journal	Intermetallics
Volume	105
DOIs	https://doi.org/10.1016/j.intermet.2018.11.010
Publication status	Published - 2019 Feb

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program ( NRF-2017R1D1A1A09000570 ). This work was also supported by a grant from the Industrial Core Technology Development Program ( 10083640 ). K.H. Lee was supported by the Low-dimensional Materials Genome Development by Korea Research Institute of Standards and Science ( KRISS−2016-16011070 ).

Publisher Copyright:
© 2018

All Science Journal Classification (ASJC) codes

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.intermet.2018.11.010

Cite this

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title = "Effective role of filling fraction control in p-type CexFe3CoSb12 skutterudite thermoelectric materials",

abstract = "p-type Ce-filled Fe4-xCoxSb12 skutterudite is a promising thermoelectric material with high thermal-to-electric conversion efficiency at mid-to-high temperatures. However, fabrication of a complete single phase is required in order to secure performance reliability due to the charge state of Ce. We herein report that optimization of the Ce filling fraction according to the compositions and synthetic processes is a critical factor to develop a manufacturing process that can be applied to massive production of single phase p-type Ce-filled skutterudite. The durable maximum zT (thermoelectric figure of merit) value of Ce-filled skutterudites fabricated here was 0.81 at 723 K in Ce0.86Fe3CoSb12.09.",

author = "Bae, {Sang Hyun} and Lee, {Kyu Hyoung} and Choi, {Soon Mok}",

note = "Funding Information: This research was supported by the Basic Science Research Program ( NRF-2017R1D1A1A09000570 ). This work was also supported by a grant from the Industrial Core Technology Development Program ( 10083640 ). K.H. Lee was supported by the Low-dimensional Materials Genome Development by Korea Research Institute of Standards and Science ( KRISS−2016-16011070 ). Publisher Copyright: {\textcopyright} 2018",

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AU - Choi, Soon Mok

N1 - Funding Information: This research was supported by the Basic Science Research Program ( NRF-2017R1D1A1A09000570 ). This work was also supported by a grant from the Industrial Core Technology Development Program ( 10083640 ). K.H. Lee was supported by the Low-dimensional Materials Genome Development by Korea Research Institute of Standards and Science ( KRISS−2016-16011070 ). Publisher Copyright: © 2018

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AB - p-type Ce-filled Fe4-xCoxSb12 skutterudite is a promising thermoelectric material with high thermal-to-electric conversion efficiency at mid-to-high temperatures. However, fabrication of a complete single phase is required in order to secure performance reliability due to the charge state of Ce. We herein report that optimization of the Ce filling fraction according to the compositions and synthetic processes is a critical factor to develop a manufacturing process that can be applied to massive production of single phase p-type Ce-filled skutterudite. The durable maximum zT (thermoelectric figure of merit) value of Ce-filled skutterudites fabricated here was 0.81 at 723 K in Ce0.86Fe3CoSb12.09.

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