High-temperature thermoelectric performance of (W1−xTix)18O49

Nhat Quang Minh Tran; Michitaka Ohtaki; Koichiro Suekuni

doi:10.1016/j.jeurceramsoc.2021.12.014

High-temperature thermoelectric performance of (W₁₋_xTi_x)₁₈O₄₉

Nhat Quang Minh Tran, Michitaka Ohtaki, Koichiro Suekuni

機能材料設計学

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

1 被引用数 (Scopus)

抄録

High-temperature thermoelectric properties of tungsten-based Magnéli phase oxide (W_1-_xTi_x)₁₈O₄₉ (0 ≤ x ≤ 0.25) prepared by solid state reaction followed by densification via spark plasma sintering (SPS) were studied. The Ti substitution increased the Seebeck coefficient, the power factor, and decreased both the electronic and lattice thermal conductivity. The synergistic substitution effect on the electrical and thermal properties and inherently low total thermal conductivity of 1.46 ± 0.08 WK⁻¹ m⁻¹ originating from the tunnel-like crystal structure of the oxide led to a significantly high ZT of 0.50 ± 0.07 at 1073 K for the sample with x = 0.2.

本文言語	英語
ページ（範囲）	1486-1492
ページ数	7
ジャーナル	Journal of the European Ceramic Society
巻	42
号	4
DOI	https://doi.org/10.1016/j.jeurceramsoc.2021.12.014
出版ステータス	出版済み - 4月 2022

!!!All Science Journal Classification (ASJC) codes

セラミックおよび複合材料
材料化学

文献へのアクセス

10.1016/j.jeurceramsoc.2021.12.014

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引用スタイル

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title = "High-temperature thermoelectric performance of (W1−xTix)18O49",

abstract = "High-temperature thermoelectric properties of tungsten-based Magn{\'e}li phase oxide (W1-xTix)18O49 (0 ≤ x ≤ 0.25) prepared by solid state reaction followed by densification via spark plasma sintering (SPS) were studied. The Ti substitution increased the Seebeck coefficient, the power factor, and decreased both the electronic and lattice thermal conductivity. The synergistic substitution effect on the electrical and thermal properties and inherently low total thermal conductivity of 1.46 ± 0.08 WK−1 m−1 originating from the tunnel-like crystal structure of the oxide led to a significantly high ZT of 0.50 ± 0.07 at 1073 K for the sample with x = 0.2.",

author = "Tran, {Nhat Quang Minh} and Michitaka Ohtaki and Koichiro Suekuni",

note = "Funding Information: The authors would like to thank Dr. S. Hirata, Mr. W. Klich, Dr. K. Hashikuni, Ms. B. T. Nguyen, and Ms. S. Maneeyom for their valuable supports and discussion. This work was supported by JSPS KAKENHI Grant Number JP19H02800 . Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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N1 - Funding Information: The authors would like to thank Dr. S. Hirata, Mr. W. Klich, Dr. K. Hashikuni, Ms. B. T. Nguyen, and Ms. S. Maneeyom for their valuable supports and discussion. This work was supported by JSPS KAKENHI Grant Number JP19H02800 . Publisher Copyright: © 2021 Elsevier Ltd

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AB - High-temperature thermoelectric properties of tungsten-based Magnéli phase oxide (W1-xTix)18O49 (0 ≤ x ≤ 0.25) prepared by solid state reaction followed by densification via spark plasma sintering (SPS) were studied. The Ti substitution increased the Seebeck coefficient, the power factor, and decreased both the electronic and lattice thermal conductivity. The synergistic substitution effect on the electrical and thermal properties and inherently low total thermal conductivity of 1.46 ± 0.08 WK−1 m−1 originating from the tunnel-like crystal structure of the oxide led to a significantly high ZT of 0.50 ± 0.07 at 1073 K for the sample with x = 0.2.

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