期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 76, 期 -, 页码 122-127出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2014.04.023
关键词
Thermal conduction; Graphene aerogels; Thermal interface materials
资金
- Start up Grant [R-265-000-361-133]
- SERC Public Sector Research Funding (PSF) [R-265-000-424-305]
- China Scholarship Council
Graphene aerogels (GAs), fabricated from graphene oxide (GO) suspensions using a mild chemical reduction method, are promising for many applications. Here we report the thermal conductivities of GAs having various graphene volume fractions from 0.67% to 2.5%, with and without annealing treatment, measured using a comparative infrared microscopy technique. The thermal conductivities of the GAs are measured to be 0.12-0.36 W/(m K). This is the first systematical study of the thermal properties of GAs and the results elucidate the factors limiting their thermal conductivities. The developed thermal measurement technique can be applied to other porous material systems. (C) 2014 Elsevier Ltd. All rights reserved.
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