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arXiv · 1403.2467

Electrical and thermal conductivities of reduced graphene oxide/polystyrene composites

Wonjun Park·Jiuning Hu·Luis A. Jauregui·Xiulin Ruan·Yong P. Chen
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Abstract

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 ~ 0.25 vol.%. Their temperature-dependent electrical conductivity follows Efros-Shklovskii (ES) variable range hopping (VRH) conduction in the temperature range of 30 to 300 K. The thermal conductivity ($\kappa$) of composites is enhanced by ~ 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.

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Wonjun Park, Jiuning Hu, Luis A. Jauregui, Xiulin Ruan, Yong P. Chen. 2014-03-11. Electrical and thermal conductivities of reduced graphene oxide/polystyrene composites. https://doi.org/10.1063/1.4869026

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