BN Nanosheet/Polymer Films with Highly Anisotropic Thermal Conductivity for Thermal Management Applications

Yuanpeng Wu, Ye Xue, Si Qin, Dan Liu, Xuebin Wang, Xiao Hu, Jingliang Li, Xungai Wang, Yoshio Bando, Dmitri Golberg, Ying Chen, Yury Gogotsi, Weiwei Lei

Research output: Contribution to journalArticlepeer-review

129 Scopus citations

Abstract

The development of advanced thermal transport materials is a global challenge. Two-dimensional nanomaterials have been demonstrated as promising candidates for thermal management applications. Here, we report a boron nitride (BN) nanosheet/polymer composite film with excellent flexibility and toughness prepared by vacuum-assisted filtration. The mechanical performance of the composite film is highly flexible and robust. It is noteworthy that the film exhibits highly anisotropic properties, with superior in-plane thermal conductivity of around 200 W m-1 K-1 and extremely low through-plane thermal conductivity of 1.0 W m-1 K-1, making this material an excellent candidate for thermal management in electronics. Importantly, the composite film shows fire-resistant properties. The newly developed unconventional flexible, tough, and refractory BN films are also promising for heat dissipation in a variety of applications.

Original languageEnglish (US)
Pages (from-to)43163-43170
Number of pages8
JournalACS Applied Materials and Interfaces
Volume9
Issue number49
DOIs
StatePublished - Dec 13 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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