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Preparation of High-Performance Antimonene Thermoelectric Composites Doped with Graphene

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Abstract:

Thermoelectric materials are valued for their ability to convert waste heat into electrical energy. Antimonene nanosheets (AnNS) have recently emerged as a promising thermoelectric material due to their unique two-dimensional structure. However, developing efficient and scalable methods for preparing AnNS-based thermoelectric composites with improved performance remains challenging. In this study, we developed an efficient and environmentally friendly method for preparing antimonene nanosheet (AnNS)/graphene platelets (GNPs) composites using ultrasonic dispersion in an ethanol-based system, followed by thin film fabrication via cold-pressing. Atomic Force Microscopy (AFM) was used to characterize the microstructure and thickness of the nanosheets, while Scanning Electron Microscopy (SEM) images revealed the contact structures at different GNP concentrations. The characterization of the thermoelectric composites involved techniques such as X-ray diffraction (XRD) and Raman spectroscopy. The thermoelectric (TE) performance of the composites was systematically evaluated across different GNP volume fractions. Composites containing 1 vol% GNPs exhibited the highest electrical conductivity, measured at 2158.22 ± 25.5 S/cm, along with a Seebeck coefficient of 27.17 ± 0.15 µV/K, yielding a power factor of 159.34 ± 5.6 µW/m·K². When these composite films were integrated into a thermoelectric generator (TEG) and exposed to a human body temperature gradient of 11 °C, they produced a continuous voltage of 43.62 mV and a current of 0.21925 µA, yielding an output power of 9.56 nW. Additionally, the corrosion resistance of the composites was assessed, revealing that the 1 vol% GNPs composite exhibited superior performance compared to other compositions.

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Nano Hybrids and Composites Vol. 48 View Preview

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Nano Hybrids and Composites (Volume 48)

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41-54

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https://doi.org/10.4028/p-o7Wlqa

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Online since:

November 2025

Authors:

Qing Shi Meng, Zhe Xu Chen, Shuang Shan Li, Kang Bo Zhao, Hao Chen Yuan, Sen Sen Han*

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Antimonene Nanosheets, Graphene, Thermoelectric Performance

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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