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| Synergistic Effect of Aligned Graphene Nanosheets in Graphene Foam for High-Performance Thermally Conductive Composites | |
| Wu, Zhaohong; Xu, Chuan; Ma, Chaoqun; Liu, Zhibo; Cheng, Hui-Ming; Ren, Wencai | |
| 2019-05-10 | |
| Source Publication | ADVANCED MATERIALS
 |
| ISSN | 0935-9648 |
| Volume | 31Issue:19 |
| Abstract | Graphene shows a great potential for high-performance thermally conductive composite applications because of its extremely high thermal conductivity. However, the graphene-based polymer composites reported so far only have a limited thermal conductivity, with the highest thermal conductivity enhancement (TCE) per 1 vol% graphene less than 900%. Here, a continuous network of graphene foam (GF), filled with aligned graphene nanosheets (GNs), is shown to be an ideal filler structure for thermally conductive composite materials. Compared to previous reports, a clear thermal percolation is observed at a low graphene loading fraction. The GNs/GF/natural rubber composite shows the highest TCE of 8100% (6.2 vol% graphene loading) ever reported at room temperature, which gives a record-high TCE per 1 vol% graphene of 1300%. Further analyses reveal a significant synergistic effect between the aligned GNs and 3D interconnected GF, which plays a key role in the formation of a thermal percolation network to remarkably improve the thermal conductivity of the composites. Additionally, the use of this composite for efficient heat dissipation of light-emitting diode (LED) lamps is demonstrated. These findings provide valuable guidance to design high-performance graphene-based thermally conductive materials, and open up the possibility for the use of graphene in high-power electronic devices. |
| Keyword | composites graphene foam graphene nanosheets synergistic effect thermal conductivity |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000469243400016 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/81099 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Wu, Zhaohong,Xu, Chuan,Ma, Chaoqun,et al. Synergistic Effect of Aligned Graphene Nanosheets in Graphene Foam for High-Performance Thermally Conductive Composites[J]. ADVANCED MATERIALS,2019,31(19). |
| APA | Wu, Zhaohong,Xu, Chuan,Ma, Chaoqun,Liu, Zhibo,Cheng, Hui-Ming,&Ren, Wencai.(2019).Synergistic Effect of Aligned Graphene Nanosheets in Graphene Foam for High-Performance Thermally Conductive Composites.ADVANCED MATERIALS,31(19). |
| MLA | Wu, Zhaohong,et al."Synergistic Effect of Aligned Graphene Nanosheets in Graphene Foam for High-Performance Thermally Conductive Composites".ADVANCED MATERIALS 31.19(2019). |
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