Ultralow thermal conductivity in graphene-silica porous ceramics with a special saucer structure of graphene aerogels
文献类型：期刊论文
| 作者 | Fan, Junmei1 ; Hui, Si2; Bailey, Trevor P.2; Page, Alexander2; Uher, Ctirad2; Yuan, Fangli1
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| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2019-01-28 |
| 卷号 | 7期号:4页码:1574-1584 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta10426c |
| 英文摘要 | In our work, a unique saucer structure of graphene aerogels in the form of graphene sheets (nearly 10 m) is designed to grow them in situ on hollow silica spheres that are connected to their neighbors by C-O and C-Si bonds after fabrication by spark plasma sintering (SPS). The graphene-silica porous ceramics (GSPCs) are characterized by Fourier transform infrared (FTIR), Raman and X-ray photoelectron (XPS) spectroscopies. The mechanism of metal-catalyst-free method for the direct synthesis of graphene aerogels in the form of large-size graphene sheets on hollow spheres is studied. Compared to other ceramics, GSPCs have an ultralow thermal conductivity (0.054-0.057 W m(-1) K-1 at room temperature (RT) and 0.038 W m(-1) K-1 at 90 K) and a relatively high compressive strength (7.4 MPa), which depends on the special saucer structure of the graphene aerogels and their high porosity (89.63%). We additionally find that the temperature dependence of the thermal conductivity is altered by the content of graphene aerogels. |
| WOS关键词 | PLASMA-SINTERING SPS ; CARBON CONTAMINATION ; AGGREGATION ; INSULATION ; REDUCTION ; INTERFACE ; OXIDATION ; MGAL2O4 ; SPHERES ; SPINEL |
| 资助项目 | National Natural Science Foundation of China[51574211] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000459724300020 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28352]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Fan, Junmei; Yuan, Fangli |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase Complex Syst, Beijing 100190, Peoples R China 2.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA |
| 推荐引用方式 GB/T 7714 | Fan, Junmei,Hui, Si,Bailey, Trevor P.,et al. Ultralow thermal conductivity in graphene-silica porous ceramics with a special saucer structure of graphene aerogels[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(4):1574-1584. |
| APA | Fan, Junmei,Hui, Si,Bailey, Trevor P.,Page, Alexander,Uher, Ctirad,&Yuan, Fangli.(2019).Ultralow thermal conductivity in graphene-silica porous ceramics with a special saucer structure of graphene aerogels.JOURNAL OF MATERIALS CHEMISTRY A,7(4),1574-1584. |
| MLA | Fan, Junmei,et al."Ultralow thermal conductivity in graphene-silica porous ceramics with a special saucer structure of graphene aerogels".JOURNAL OF MATERIALS CHEMISTRY A 7.4(2019):1574-1584. |
入库方式： OAI收割
来源：过程工程研究所
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