期刊
ACS OMEGA
卷 7, 期 41, 页码 36786-36794出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.2c05197
关键词
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资金
- Guangdong Basic and Applied Basic research Foundation
- National Key R&D Program of China
- National Natural Science Foundation of China
- Key-Area Research and Development Program of Guangdong Province
- Open Research Fund of Songshan Lake Materials Laboratory
- [2020B1515120084]
- [2022YFE0201200]
- [52071223]
- [2020B0101340002]
- [2021SLABFN13]
Graphene/hexagonal boron nitride composite coatings with remarkable infrared radiation and thermal conductivity were successfully synthesized via a scalable combustion synthesis method, offering potential applications in heat dissipation.
To enhance the infrared radiation efficiency and the heat transfer performance simultaneously, graphene (Gr) was synthesized in situ on hexagonal boron nitride (h-BN) to prepare Gr/h-BN composites by a scalable combustion synthesis in CO2 atmosphere using Mg as sacrificial solder. The synthesized Gr/h-BN composites were added in polydimethylsiloxane polymer to prepare composite coatings, which show an infrared emissivity greater than 0.95 and a through-plane thermal conductivity up to 2.584 W center dot m-1 center dot K-1. When functioning on an Al heatsink, such a composite coating can reduce the temperature by as much as 21.7 degrees C. Meanwhile, the composite coating exhibits superior adhesion on the Al substrate. Therefore, Gr/h-BN composite coatings with noteworthy infrared radiation and thermal conductivity are expected to be a promising candidate for heat dissipation applications.
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