Rapid preparation of InxCo4Sb12 with a record-breaking ZT = 1.5: the role of the In overfilling fraction limit and Sb overstoichiometry
Vladimir V. Khovaylo
1, 2, 3, 4
,
T A Korolkov
1, 2, 3, 4
,
Andrei Voronin
1, 5
,
A.I. Voronin
2, 3, 4, 6, 7
,
M V Gorshenkov
2, 3, 4
,
A. T. BURKOV
4, 8, 9, 10
3
Moscow 119049
4
Russia
|
7
Chelyabinsk 454080
|
10
St. Petersburg 194021
Publication type: Journal Article
Publication date: 2017-01-19
scimago Q1
wos Q1
SJR: 2.462
CiteScore: 16.7
Impact factor: 9.5
ISSN: 20507488, 20507496, 09599428, 13645501
General Chemistry
General Materials Science
Renewable Energy, Sustainability and the Environment
Abstract
Samples of indium-filled InxCo4Sb12 skutterudite were successfully synthesized by conventional induction melting without the use of evacuated quartz ampoules. Addition of In above the filling fraction limit (x ≈ 0.22) and adjustment of Sb excess in the induction-melted InxCo4Sb12 ingots allowed us to suppress formation of the unwanted CoSb2 phase in the sintered samples and effectively control the amount of the InSb impurity phase which precipitated in nanometer-sized regions along the grain boundaries of the main skutterudite phase. Measurements of the Seebeck coefficient, electrical conductivity and thermal conductivity of the InxCo4Sb12 samples with nominal In contents x = 0.2, 0.6, and 1.0 revealed a simultaneous increase in the electrical conductivity and decrease in the thermal conductivity. This results in the record value of the thermoelectric figure of merit ZT ≈ 1.5 for single-filled skutterudites which was attained in the In1Co4Sb12 sample at 725 K.
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Total citations:
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Citations from 2024:
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(23.44%)
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GOST
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Khovaylo V. V. et al. Rapid preparation of InxCo4Sb12 with a record-breaking ZT = 1.5: the role of the In overfilling fraction limit and Sb overstoichiometry // Journal of Materials Chemistry A. 2017. Vol. 5. No. 7. pp. 3541-3546.
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Khovaylo V. V., Korolkov T. A., Voronin A., Voronin A., Gorshenkov M., Gorshenkov M. V., BURKOV A. T. Rapid preparation of InxCo4Sb12 with a record-breaking ZT = 1.5: the role of the In overfilling fraction limit and Sb overstoichiometry // Journal of Materials Chemistry A. 2017. Vol. 5. No. 7. pp. 3541-3546.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1039/C6TA09092C
UR - https://xlink.rsc.org/?DOI=C6TA09092C
TI - Rapid preparation of InxCo4Sb12 with a record-breaking ZT = 1.5: the role of the In overfilling fraction limit and Sb overstoichiometry
T2 - Journal of Materials Chemistry A
AU - Khovaylo, Vladimir V.
AU - Korolkov, T A
AU - Voronin, Andrei
AU - Voronin, A.I.
AU - Gorshenkov, Mikhail
AU - Gorshenkov, M V
AU - BURKOV, A. T.
PY - 2017
DA - 2017/01/19
PB - Royal Society of Chemistry (RSC)
SP - 3541-3546
IS - 7
VL - 5
SN - 2050-7488
SN - 2050-7496
SN - 0959-9428
SN - 1364-5501
ER -
Cite this
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@article{2017_Khovaylo,
author = {Vladimir V. Khovaylo and T A Korolkov and Andrei Voronin and A.I. Voronin and Mikhail Gorshenkov and M V Gorshenkov and A. T. BURKOV},
title = {Rapid preparation of InxCo4Sb12 with a record-breaking ZT = 1.5: the role of the In overfilling fraction limit and Sb overstoichiometry},
journal = {Journal of Materials Chemistry A},
year = {2017},
volume = {5},
publisher = {Royal Society of Chemistry (RSC)},
month = {jan},
url = {https://xlink.rsc.org/?DOI=C6TA09092C},
number = {7},
pages = {3541--3546},
doi = {10.1039/C6TA09092C}
}
Cite this
MLA
Copy
Khovaylo, Vladimir V., et al. “Rapid preparation of InxCo4Sb12 with a record-breaking ZT = 1.5: the role of the In overfilling fraction limit and Sb overstoichiometry.” Journal of Materials Chemistry A, vol. 5, no. 7, Jan. 2017, pp. 3541-3546. https://xlink.rsc.org/?DOI=C6TA09092C.