Extremely High Thermal Conductivity of Graphene: Experimental Study

TL;DR

This paper reports the first experimental measurement of suspended single-layer graphene's thermal conductivity, revealing extremely high values around 5000 W/mK, indicating graphene's superior heat conduction capabilities compared to carbon nanotubes.

Contribution

First experimental measurement of thermal conductivity in suspended single-layer graphene using a non-contact optical method.

Findings

Thermal conductivity of graphene ranges from 4840 to 5300 W/mK.

Graphene's thermal conductivity exceeds that of carbon nanotubes.

Suspended graphene exhibits near room-temperature high thermal conductivity.

Abstract

We report on the first measurement of the thermal conductivity of a suspended single layer graphene. The measurements were performed using a non-contact optical technique. The near room-temperature values of the thermal conductivity in the range ~ 4840 to 5300 W/mK were extracted for a single-layer graphene. The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction.