THERMAL SCIENCE

International Scientific Journal

E. M. Elsehly

,

A. El-Khouly

,

V. Khovaylo

,

A. M. Adam

,

Abeer S. Altowyan

,

Adel Bandar Alruqi

,

Haifa S. Alqannas

THERMOELECTRIC PERFORMANCE OF FE2ALV/CNT-BASED ALLOYS

ABSTRACT
Heusler-type Fe2AlVxTi1-x alloys offer an alternative solution for the generation of thermoelectric power near room temperature. In the current research, thermoelectric properties of the p-type Fe2AlV0.9Ti0.1 and Fe2AlV0.9Ti0.1/CNT alloys, prepared by SPS, were studied. Carbon nanotubes (CNT) were used as dopants to improve the seebeck coefficient and electrical conductivity. Upon doping with CNT, the thermal conductivity was significantly reduced, meanwhile, the value of the power factor increased from 0.45 to 1.55 mW/mK2 at around 330 K. The effect of CNT inclusions on the thermoelectric parameters of Fe2AlVxTi 1-x compounds was systematically studied. When compared to Fe2AlV0.9Ti0.1, which had a figure of merit of just 0.02 at 330 K, the CNT-containing samples showed a significantly improved figure of merit up to 0.07. We offer a novel technique to improve the performance of Fe2AlV alloys.
KEYWORDS
Fe2Val alloy, Electrical properties, Thermoelectric materials, Heusler alloy, carbon nanotubes
PAPER SUBMITTED: 2022-10-05
PAPER REVISED: 2022-11-07
PAPER ACCEPTED: 2022-11-23
PUBLISHED ONLINE: 2023-01-07
DOI REFERENCE: https://doi.org/10.2298/TSCI221005194E
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [389 - 396]
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Thermoelectric performance of Fe2ALV/CNT-based alloys

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence