Issue 66, 2016, Issue in Progress

Enhancing thermal transport efficiency in carbon composites using nanospacers

Abstract

Improved thermal transport efficiency of carbon-based composites has been achieved by inserting metallic spacers within the temperature range of 50–150 °C. Al2O3, Ni, and SnO nano-particles are used as nanospacers in the graphite-like thin films, forming well-developed carbon framework. The composites show 42.5–57.7% increase in thermal conductivity (k), as compared with the pristine carbon. Among all the samples Al-inserted carbon composites exhibited the highest k value of 1128 W m−1 K−1 at 50 °C. The metallic nanopowders serve not only as filler but also as connective points for creating additional path for the heat conduction, leading to highly-efficient thermal diffusion. The apparent k value is found to be an increasing function of electrical conductivity, revealing that the conduction of free electrons is analogous to the thermal transport. The present work provided useful information concerning the thermal conduction and heat dissipation efficiencies of carbon-based composites, benefiting the design of thermal devices, e.g., heat sink and heat exchanger.

Graphical abstract: Enhancing thermal transport efficiency in carbon composites using nanospacers

Article information

Article type
Paper
Submitted
08 Apr 2016
Accepted
19 Jun 2016
First published
20 Jun 2016

RSC Adv., 2016,6, 61351-61356

Author version available

Enhancing thermal transport efficiency in carbon composites using nanospacers

C. Hsieh, Y. Chen, C. Lee, S. Juang, Z. Lin and M. M. Huq, RSC Adv., 2016, 6, 61351 DOI: 10.1039/C6RA09074E

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