Ultrathin thermoconductive and electrically insulating exfoliated graphene fluoride paper for high-performance thermal management materials
발표자
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초록
내용
An ultrathin exfoliated graphene fluoride (GFS) film as the thermal management materials for wearable electronic devices, which possesses superior thermal conductivity, high electrical resistivity, and satisfactory flexibility were prepared. Graphite fluoride powder was exfoliated into GFS by ball milling method, resulting in the fabrication of GFS film via the use of vacuum-assisted filtration. The GFS films exhibit a tunable thermal conductivity by changing the thickness of GFS films. The GFS film at the thickness of 10 μm exhibits an excellent in-plane thermal conductivity of 242 W·m-1·K-1. The outstanding in-plane thermal conductivity stems from the high intrinsic thermal conductivity of GFS and highly anisotropic aligned structure of GFS. The GFS film has a potential opportunity for the fabrication of multifunctional flexible thermal management materials in commercial portable electronics. This study is supported by Korea National University of Transportation 2020.