Electrical and thermal conductivities of reduced graphene oxide/polystyrene composites

被引：114

作者：

Park, Wonjun ^{[1
,2
]}

Hu, Jiuning ^{[1
,2
]}

Jauregui, Luis A. ^{[1
,2
]}

Ruan, Xiulin ^{[2
,3
]}

Chen, Yong P. ^{[1
,2
,4
]}

机构：

[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

[2] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA

[3] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

[4] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 11期

基金：

美国国家科学基金会;

关键词：

INTERFACE MATERIALS; CHEMICAL-REDUCTION; OXIDE; PERFORMANCE; FILMS; HEAT;

D O I：

10.1063/1.4869026

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

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