Optimizing the thermoelectric performance of FeVSb half-Heusler compound via Hf–Ti double doping
A. El-Khouly
1, 2
,
A Novitskii
3
,
Illia Serhiienko
3
,
A Kalugina
3
,
A Sedegov
3
,
D. Yu. Karpenkov
4
,
Andrei Voronin
3
,
V. Khovaylo
2, 5
,
A. Adam
6
Publication type: Journal Article
Publication date: 2020-11-01
scimago Q1
wos Q1
SJR: 1.784
CiteScore: 14.9
Impact factor: 7.9
ISSN: 03787753, 18732755
Physical and Theoretical Chemistry
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Abstract
FeVSb-based half-Heusler (HH) compound has recently been identified as promising medium-high temperature thermoelectric (TE) materials for power generation applications. In this study, enhanced thermoelectric performance of Fe(V0.8Hf0.2)1-xTixSb (x = 0.0, 0.2, 0.4, 0.5, 0.6) HH alloys by Hf–Ti dual-doping was reported studied in a temperature range from 100 to 900 K. A high content of Ti doping not only optimized the carrier concentration but also reduced the lattice thermal conductivity, which all contribute to high zT. As a result, a zT value was increased by ~20% at 873 K for Fe(V0.8Hf0.2)0.8Ti0.2Sb compound. Hf–Ti dual doping significantly reduced the lattice thermal conductivity due to enhanced point defect scattering which is mainly attributed to mass fluctuations. Hence, suppressed the material's total thermal conductivity. A reduction of ~20% was obtained for the Fe(V0.8Hf0.2)0.8Ti0.2Sb sample, compared with the single Hf-doped FeVSb sample and of ~80% compared to FeVSb at room temperature.
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32
Total citations:
32
Citations from 2024:
12
(37%)
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GOST
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El-Khouly A. et al. Optimizing the thermoelectric performance of FeVSb half-Heusler compound via Hf–Ti double doping // Journal of Power Sources. 2020. Vol. 477. p. 228768.
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El-Khouly A., Novitskii A., Serhiienko I., Kalugina A., Sedegov A., Karpenkov D. Y., Voronin A., Khovaylo V., Adam A. Optimizing the thermoelectric performance of FeVSb half-Heusler compound via Hf–Ti double doping // Journal of Power Sources. 2020. Vol. 477. p. 228768.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1016/j.jpowsour.2020.228768
UR - https://linkinghub.elsevier.com/retrieve/pii/S0378775320310727
TI - Optimizing the thermoelectric performance of FeVSb half-Heusler compound via Hf–Ti double doping
T2 - Journal of Power Sources
AU - El-Khouly, A.
AU - Novitskii, A
AU - Serhiienko, Illia
AU - Kalugina, A
AU - Sedegov, A
AU - Karpenkov, D. Yu.
AU - Voronin, Andrei
AU - Khovaylo, V.
AU - Adam, A.
PY - 2020
DA - 2020/11/01
PB - Elsevier
SP - 228768
VL - 477
SN - 0378-7753
SN - 1873-2755
ER -
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@article{2020_El-Khouly,
author = {A. El-Khouly and A Novitskii and Illia Serhiienko and A Kalugina and A Sedegov and D. Yu. Karpenkov and Andrei Voronin and V. Khovaylo and A. Adam},
title = {Optimizing the thermoelectric performance of FeVSb half-Heusler compound via Hf–Ti double doping},
journal = {Journal of Power Sources},
year = {2020},
volume = {477},
publisher = {Elsevier},
month = {nov},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0378775320310727},
pages = {228768},
doi = {10.1016/j.jpowsour.2020.228768}
}