Synthesis of Bi_0.5Sb_1.5Te₃/Graphene Composite Powders

Abstract:

In this paper, Bi_0.5Sb_1.5Te₃/graphene composite powders were prepared by hydrothermal synthesis method. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) were used to characterize the morphology and structure of the composite powders. As a nanocomposite phase, graphene provided plenty of charge carriers and active sites for nucleation of Bi_0.5Sb_1.5Te₃ grains. Bi_0.5Sb_1.5Te₃ particles aggregated and attached to the surfaces of graphene randomly. In addition, it was found that the sizes of Bi_0.5Sb_1.5Te₃ particles varied with different content of graphene. The formation mechanism of Bi_0.5Sb_1.5Te₃/graphene composite powders was discussed.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 83-87
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.83
• Online since: January 2013
• Authors: B.B. Liang, Y. Li, L.L. Xu, L.J. Wang, W. Jiang
• Keywords: Bi_0.5Sb_1.5Te₃, Graphen, Thermoelectric Material

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