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

Nhat Quang Minh Tran, Michitaka Ohtaki, Koichiro Suekuni

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1486-1492
Number of pages7
JournalJournal of the European Ceramic Society
Issue number4
Publication statusPublished - Apr 2022

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


Dive into the research topics of 'High-temperature thermoelectric performance of (W1−xTix)18O49'. Together they form a unique fingerprint.

Cite this