石墨烯导热研究进展

宋厚甫, 康飞宇

Recent Progress on Thermal Conduction of Graphene

Houfu Song, Feiyu Kang

图4 百微米厚度石墨烯导热膜的制备、表征与热性能测试81

Fig 4 The preparation, characterization and thermal feature of graphene film with a thickness of over 100 μm 81. (a) Schematic of the fabrication process of the ultrathick GF and photographs at each step. Scale bar from top to bottom: 4, 1, 1, 1, 1, 1 cm. (b–e) A series of thick films pasted with different layers, including 6 layers (b), 12 layers (c), 16 layers (d) and 24 layers (e). (f) Mechanism diagram of the fusion between the two nano-thick films. (g) TEM image of the cross section of an individual 30 nm nano-thick GF. (h, i) TEM images of the pasted 60 nm nano-thick GF, revealing the robust coalescence of the two 30 nm thick films at the contact interface. (j) Infrared thermal image of GFs and metallic foils. The right three samples have a thickness of 200 μm, attached vertically on a constant temperature heat source. (k) Temperature of the graphite bulk versus time when it was heated by 24-layer PGF, 16-layer PGF, 12-layer PGF, 6-layer PGF and single thin PGF. Adapted with permission from Ref. 81, Copyright 2020, Elsevier.