1. Two-Dimensional Hexagonal Boron Nitride Nanosheets as Lateral Heat Spreader With High Thermal Conductivity
- Author
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Xiangdong Kong, Linhong Li, Maohua Li, Juncheng Xia, Yandong Wang, Xianzhe Wei, Shaoyang Xiong, Ping Gong, Zhongbin Pan, Xinfeng Wu, Tao Cai, Kazuhito Nishimura, Cheng-Te Lin, Nan Jiang, and Jinhong Yu
- Subjects
boron nitride nanosheets ,cellulose nanofibers ,heat spreader ,filtration ,thermal conduction ,Technology - Abstract
A highly thermally conductive heat spreader for applications in electronic devices is becoming increasingly demanding, and therefore the removal of excess heat requires an efficient heat dissipating device. Boron nitride nanosheets (BNNSs) were prepared as thermally conductive fillers using hexagonal boron nitride (h-BN) powder as raw material by a water exfoliation method. A composite film was prepared by vacuum filtration using cellulose nanofibers (CNFs) as the substrate with an in-plane thermal conductivity (TC) of 82.4 W m−1 K−1, thermal conductivity enhancement increasing by 9,486% compared to pure cellulose film. Thus, CNF/BNNS composite films are promising as effective thermal interface materials (TIMs) in electronic devices and electronic component applications.
- Published
- 2022
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