Open AccessA lightweight and high thermal performance graphene heat pipe
Author(s) -
Liu Ya,
Chen Shujing,
Fu Yifeng,
Wang Nan,
Mencarelli Davide,
Pierantoni Luca,
Lu Hongbin,
Liu Johan
Publication year - 2021
Publication title -
nano select
Language(s) - English
Resource type - Journals
ISSN - 2688-4011
DOI - 10.1002/nano.202000195
Subject(s) - heat pipe , materials science , thermal conductivity , graphene , electronics , heat spreader , heat sink , thermal management of electronic devices and systems , mechanical engineering , composite material , heat transfer , nanotechnology , electrical engineering , mechanics , engineering , physics
Heat pipe is one of the most efficiency tools for heat dissipation in power systems. Currently, heat pipes are usually made of copper or aluminum. However, due to their relatively high density and limited heat transmission capacity, heat pipes are facing urgent challenges in power electronics. In this paper, a new class of graphene enhanced heat pipe that can cope with these issues is reported. The graphene enhanced heat pipe is made of high thermal conductivity graphene assembled film with nanostructure enhanced inner surfaces. The study shows that the dramatically improved heat dissipation capacity, 7230 W m −2 K −1 g −1 , about 3.5 times higher than that of copper based commercial heat pipes can be achieved. This paves the way for using graphene enhanced heat pipe in lightweight and large capacity cooling applications, as required in many systems such as automotive electronics, hand‐sets and space electronics.