Electrical and thermal conductivities of reduced graphene oxide/polystyrene composites
Date of this Version
3-17-2014Abstract
The author reports an experimental study of electrical and thermal transport in reduced graphene oxide (RGO)/polystyrene (PS) composites. The electrical conductivity (sigma) of RGO/PS composites with different RGO concentrations at room temperature shows a percolation behavior with the percolation threshold of similar to 0.25 vol. %. Their temperature-dependent electrical conductivity follows Efros-Shklovskii variable range hopping conduction in the temperature range of 30-300K. The thermal conductivity (kappa) of composites is enhanced by similar to 90% as the concentration is increased from 0 to 10 vol. %. The thermal conductivity of composites approximately linearly increases with increasing temperature from 150 to 300 K. Composites with a higher concentration show a stronger temperature dependence in the thermal conductivity. (C) 2014 AIP Publishing LLC.
Discipline(s)
Nanoscience and Nanotechnology
Download
Comments
This is the publisher PDF of Park, W; Hu, J; Lauregui, LA; Ruan, X; and Chen, YP. "Electrical and thermal conductivities of reduced graphene oxide/polystyrene composites." Applied Physics Letters, 104. 113101. 2014. Copyright AIP, it can be found at http://dx.doi.org/10.1063/1.4869026.