A light-weight and high thermal performance graphene heat pipe

Ya Liu, Shujing Chen, Yifeng Fu, Nan wang, Davide Mencarelli, Luca Pierantoni, Hongbin Lu, Johan Liu

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Feb 27, 2020
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Received Date: 5th February 20

Heat pipe is one of the most efficient tools for heat dissipation in electronics and power systems. Currently, heat pipes are usually made of copper, aluminum or stainless steel. Due to their relatively high density and limited heat transmission capacity, heat pipes are facing urgent challenges in power electronics and power modules. In this paper, we report a new class of graphene enhanced heat pipes that can cope with these issues. The graphene enhanced heat pipes are made of high thermal conductivity graphene assembled film and graphene laminated copper films with nanostructure enhanced inner surfaces. The study shows that the dramatically improved heat dissipation capacity, 6100 W m-2 K-1 g-1, about 3 times higher than that of copper based commercial heat pipes can be achieved. This paves the way for using graphene enhanced heat pipes in light-weight and large capacity cooling applications, as required in many systems such as avionics, automotive electronics, laptop computers, handsets and space electronics.

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This is an abstract of a preprint hosted on an independent third party site. It has not been peer reviewed but is currently under consideration at Nature Communications.

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