Toppling the Transport Properties with Cationic Overstoichiometry in Thermoelectric Colusite: [Cu26Cr2Ge6]1+δS32

Gabin Guélou, Ventrapati Pavan Kumar, Abdelhamid Bourhim, Pierric Lemoine, Bernard Raveau, Andrew Supka, Oleg I. Lebedev, Rabih Al Rahal Al Orabi, Marco Fornari, Koichiro Suekuni, Emmanuel Guilmeau

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

The excellent thermoelectric properties of colusite are known to be closely related to the nature of the cations at the core of the tetrahedral-octahedral complexes. Here, we demonstrate that cation overstoichiometry decreases the carrier concentration and also generates structural disorder, which modify the conduction mechanism in a way that resembles the effect of cation-size mismatch. This functionalization of the "Cu26S32" conductive network leads to a high figure of merit of 1.0 at 700 K. This study highlights the importance of the cationic arrangement and furthers our understanding on the fascinating transport properties in colusite.

本文言語英語
ページ(範囲)4180-4185
ページ数6
ジャーナルACS Applied Energy Materials
3
5
DOI
出版ステータス出版済み - 5 26 2020

All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • エネルギー工学および電力技術
  • 電気化学
  • 材料化学
  • 電子工学および電気工学

フィンガープリント

「Toppling the Transport Properties with Cationic Overstoichiometry in Thermoelectric Colusite: [Cu<sub>26</sub>Cr<sub>2</sub>Ge<sub>6</sub>]<sub>1+Î&acute;</sub>S<sub>32</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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