Improved Electrical and Thermal Conductivities of Graphene–Carbon Nanotube Composite Film as an Advanced Thermal Interface Material

Youcheng Jiang, Shangzhi Song, Mengjuan Mi, Lixuan Yu, Lisha Xu (), Puqing Jiang () and Yilin Wang ()
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Youcheng Jiang: School of Microelectronics, Shandong Technology Center of Nanodevices and Integration, Shandong University, Jinan 250100, China
Shangzhi Song: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Mengjuan Mi: School of Microelectronics, Shandong Technology Center of Nanodevices and Integration, Shandong University, Jinan 250100, China
Lixuan Yu: School of Microelectronics, Shandong Technology Center of Nanodevices and Integration, Shandong University, Jinan 250100, China
Lisha Xu: School of Physics, Hubei University, Wuhan 430062, China
Puqing Jiang: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Yilin Wang: School of Microelectronics, Shandong Technology Center of Nanodevices and Integration, Shandong University, Jinan 250100, China

Energies, 2023, vol. 16, issue 3, 1-11

Abstract: Thermal management has become a crucial issue for the rapid development of electronic devices, and thermal interface materials (TIMs) play an important role in improving heat dissipation. Recently, carbon−based TIMs, including graphene, reduced graphene oxide, and carbon nanotubes (CNTs) with high thermal conductivity, have attracted great attention. In this work, we provide graphene−carbon nanotube composite films with improved electrical and thermal conductivities. The composite films were prepared from mixed graphene oxide (GO) and CNT solutions and then were thermally reduced at a temperature greater than 2000 K to form a reduced graphene oxide (rGO)/CNT composite film. The added CNTs connect adjacent graphene layers, increase the interlayer interaction, and block the interlayer slipping of graphene layers, thereby improving the electrical conductivity, through−plane thermal conductivity, and mechanical properties of the rGO/CNT composite film at an appropriate CNT concentration. The rGO/CNT(4:1) composite film has the most desired properties with an electrical conductivity of ~2827 S/cm and an in−plane thermal conductivity of ~627 W/(m·K). The produced rGO/CNT composite film as a TIM will significantly improve the heat dissipation capability and has potential applications in thermal management of electronics.

Keywords: thermal interface materials; reduced graphene oxide; carbon nanotube; composite film (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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