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

Nhat Quang Minh Tran, Michitaka Ohtaki, Koichiro Suekuni

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)

抄録

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.

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
42
4
DOI
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

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