High thermoelectric performance of niobium-doped strontium titanate bulk material affected by all-scale grain boundary and inclusions

Jun Wang, Xinxin Ye, Xinba Yaer, Boyu Zhang, Wen Ma, Lei Miao

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The large thermal conductivity of SrTiO3 bulk material limits its potential application for high-temperature thermoelectricity. The effects of all-scale grain boundaries and inclusions on the thermoelectric performance of Nb-doped bulk SrTiO3 materials are investigated in this study. Nano- to microscale grain boundaries and inclusions reduce the thermal conductivity by 30%. As a result, the ZT value is enhanced 2.6 times by a combination of all-sized crystals, energy filtering effect, multilevel scattering behaviors of nano/microscale grain boundaries and inclusions.

本文言語English
ページ(範囲)25-28
ページ数4
ジャーナルScripta Materialia
99
DOI
出版ステータスPublished - 2015 4 1
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金

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