Iodine cation bridged graphene sheets with strengthened interface combination for electromagnetic wave absorption
文献类型：期刊论文
| 作者 | Li, Qingsong1; Li, Shitong1; Liu, Qiangchun1; Liu, Xiaofang2; Shui, Jianglan2; Kong, Xiangkai1,3 |
| 刊名 | CARBON
 |
| 出版日期 | 2021-10-15 |
| 卷号 | 183 |
| ISSN号 | 0008-6223 |
| 关键词 | Iodine cation Microwave absorbing Graphene |
| DOI | 10.1016/j.carbon.2021.07.015 |
| 通讯作者 | Liu, Xiaofang(liuxf05@buaa.edu.cn) ; Shui, Jianglan(shuijianglan@buaa.edu.cn) ; Kong, Xiangkai(kxk@chnu.edu.cn) |
| 英文摘要 | Graphene-based metal-free aerogel is desirable for lightweight electromagnetic wave (EMW) absorbing materials. However, the weak van-der-Waals combination between graphene sheets, accompanied by the repulsion from surface oxygen-related polar groups, significantly hinder the transfer of electrons between the sheets, and lead to poor mechanical strength. These become bottlenecks for the further improvement of EMW absorption and have a huge impact on achieving multi-functions. Here, we used an iodine modification strategy to fabricate reduced graphene oxide (RGO) aerogel, in which graphene sheets are bridged by iodine cations (I+). Meanwhile, iodine promotes the conversion of epoxy groups to hydroxyl groups on graphene, thereby facilitating the adhension of I+ on the surface. These iodine cations rather than iodine anions are essential to strengthen the interconnection between graphene sheets, which enables the RGO aerogel to exhibit higher electrical conductivity, larger mechanical strength, higher thermal stability, and significantly improved EMW absorbing capability. With the improvement in conduction loss and impedance matching, the iodine-bridged RGO aerogel exhibits a maximium reflection loss of -52.8 dB and an effective absorption bandwidth of 7.2 GHz at 2 wt% filler loading, which are 3.8 and 1.5 times of pure RGO, respectively. Besides, the improved mechanical strength and resistance to temperature change benefit expanding the application fields of this aerogel. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS关键词 | MICROWAVE-ABSORPTION ; ORGANIC FRAMEWORK ; ONE-STEP ; PERFORMANCE ; LIGHTWEIGHT ; REDUCTION ; COMPOSITE ; NANOSHEETS ; NITROGEN ; AEROGELS |
| 资助项目 | National Nature Science Foundation of China[U1832138] ; National Nature Science Foundation of China[51602116] ; Anhui Provincial Natural Science Foundation[1508085ME100] ; Anhui Provincial Natural Science Foundation[1708085QB40] ; Anhui Provincial Natural Science Fund for Colleges and Universities[KJ2017ZD31] |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000705083800010 |
| 资助机构 | National Nature Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Fund for Colleges and Universities |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/125601]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Xiaofang; Shui, Jianglan; Kong, Xiangkai |
| 作者单位 | 1.Huaibei Normal Univ, Anhui Prov Key Lab Pollutant Sensit Mat & Environ, Minist Educ, Key Lab Green & Precise Synthet Chem & Applicat, Huaibei 235000, Anhui, Peoples R China 2.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China 3.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qingsong,Li, Shitong,Liu, Qiangchun,et al. Iodine cation bridged graphene sheets with strengthened interface combination for electromagnetic wave absorption[J]. CARBON,2021,183. |
| APA | Li, Qingsong,Li, Shitong,Liu, Qiangchun,Liu, Xiaofang,Shui, Jianglan,&Kong, Xiangkai.(2021).Iodine cation bridged graphene sheets with strengthened interface combination for electromagnetic wave absorption.CARBON,183. |
| MLA | Li, Qingsong,et al."Iodine cation bridged graphene sheets with strengthened interface combination for electromagnetic wave absorption".CARBON 183(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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