2022
DOI: 10.1021/acsaem.2c02269
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Discovery of YbNiSb-Based Half-Heusler Alloys as Promising Thermoelectric Materials

Abstract: Half-Heusler materials are promising candidates for high-temperature power generation and have relatively high lattice thermal conductivity compared to other thermoelectric material systems. In this work, we report novel p-type YbNiSbbased half-Heusler alloys with a low lattice thermal conductivity (∼3.6 W m −1 K −1 at 340 K) that resulted from their large Gruneisen parameter, low sound speed, and low Debye temperature. All YbNiSb-based alloys exhibit a high carrier mobility of 30−50 cm 2 V −1 s −1 at room tem… Show more

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Cited by 2 publications
(1 citation statement)
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“…However, owing to the challenge of synthesis and complex intrinsic defects, Re-based HH compounds have been rarely studied experimentally. 21 In 2020, DyNiSb, ErNiSb, TmNiSb, and LuNiSb were successfully prepared by Ciesielski et al ., 22 of which the κ L were reported to be about 2.0–5.0 W m −1 K −1 at 300 K. The κ L of YbNiSb, prepared by Huang et al ., 21 was reported to be about 2.2 W m −1 K −1 at 300 K. Compared to other typical HH compounds ( κ L : 12 W m −1 K −1 for VFeSb, 23 6 W m −1 K −1 for ZrNiSn, 11 18 W m −1 K −1 for ZrCoSb 24 ), the experimentally reported low κ L s in ReNiSb-based HH compounds might be favorable for good TE performance. To verify this, more systematic studies on the optimization of TE performance should be carried out.…”
Section: Introductionmentioning
confidence: 99%
“…However, owing to the challenge of synthesis and complex intrinsic defects, Re-based HH compounds have been rarely studied experimentally. 21 In 2020, DyNiSb, ErNiSb, TmNiSb, and LuNiSb were successfully prepared by Ciesielski et al ., 22 of which the κ L were reported to be about 2.0–5.0 W m −1 K −1 at 300 K. The κ L of YbNiSb, prepared by Huang et al ., 21 was reported to be about 2.2 W m −1 K −1 at 300 K. Compared to other typical HH compounds ( κ L : 12 W m −1 K −1 for VFeSb, 23 6 W m −1 K −1 for ZrNiSn, 11 18 W m −1 K −1 for ZrCoSb 24 ), the experimentally reported low κ L s in ReNiSb-based HH compounds might be favorable for good TE performance. To verify this, more systematic studies on the optimization of TE performance should be carried out.…”
Section: Introductionmentioning
confidence: 99%