Volume : V, Issue : VIII, August - 2016

THERMOELECTRIC PROPERTIES OF BISMUTH TELLURIDE NANOCOMPOSITES REINFORCED WITH GRAPHENE

Ravindra Kumar

Abstract :

 The thermoelectric properties of nanostructured bismuth telluride and its nanocomposites with 0.3 wt% graphene are reported in this communication. Nanocomposites of bismuth telluride were synthesized by using high energy ballmilling technique followed by pressing at 4 kN/m2 and sintering at 573K temperature in vacuum. XRD was used for crystallographic investigations, and phase determination. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were used to analyze microstructure, particles shape, size and surface morphology of the synthesized materials. Thermoelectric parameters such as Seebeck coefficient, electrical conductivity, thermal diffusivity, specific heat and figure of merit and of the samples were determined. Nanocomposite of bismuth telluride reinforced with 0.3% by wt graphene has been synthesized and an improvement in its figure of merit was observed which was due to significant decrease in its thermal conductivity, due to increase phonon scattering by graphene

Keywords :

Article: Download PDF    DOI : https://www.doi.org/10.36106/gjra  

Cite This Article:

Ravindra Kumar THERMOELECTRIC PROPERTIES OF BISMUTH TELLURIDE NANOCOMPOSITES REINFORCED WITH GRAPHENE Global Journal For Research Analysis,Volume-5, Issue-8, August‾2016

Number of Downloads : 502

References :