Conductivity Maximum in 3D Graphene Foams | |
Liu F(刘峰)1; Wang C(王超)1; Tang QH(汤奇恒)1,2 | |
发表期刊 | SMALL |
2018-08-09 | |
卷号 | 14期号:32页码:1801458 |
ISSN | 1613-6810 |
摘要 | In conventional foams, electrical properties often play a secondary role. However, this scenario becomes different for 3D graphene foams (GrFs). In fact, one of the motivations for synthesizing 3D GrFs is to inherit the remarkable electrical properties of individual graphene sheets. Despite immense experimental efforts to study and improve the electrical properties of 3D GrFs, lack of theoretical studies and understanding limits further progress. The causes to this embarrassing situation are identified as the multiple freedoms introduced by graphene sheets and multiscale nature of this problem. In this article, combined with transport modeling and coarse-grained molecular dynamic (MD) simulations, a theoretical framework is established to systematically study the electrical conducting properties of 3D GrFs with or without deformation. In particular, through large-scale and massive calculations, a general relation between contact area and conductance for two van der Waals bonded graphene sheets is demonstrated, in terms of which the conductivity maximum phenomenon in GrFs is first theoretically proposed and its competition mechanism is explained. Moreover, the theoretical prediction is consistent with previous experimental observations. |
关键词 | 3d Graphene Foams Conductivity First Principle Md Simulations Strain |
DOI | 10.1002/smll.201801458 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000441134400014 |
关键词[WOS] | Chemical-vapor-deposition ; Layer Graphene ; Electronic Transport ; Spongy Graphene ; Poissons Ratio ; Large-area ; Aerogels ; Cvd ; Elasticity ; Ultralight |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
项目资助者 | National Natural Science Foundation of China(11602272 ; National Basic Research Program of China(2012CB937500) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040503) ; 11602270 ; 11790292 ; 11021262 ; 11172303 ; 11132011 ; 11532013) |
论文分区 | 一类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/77653 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Liu F(刘峰); Wang C(王超) |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Liu F,Wang C,Tang QH. Conductivity Maximum in 3D Graphene Foams[J]. SMALL,2018,14,32,:1801458. |
APA | Liu F,Wang C,&Tang QH.(2018).Conductivity Maximum in 3D Graphene Foams.SMALL,14(32),1801458. |
MLA | Liu F,et al."Conductivity Maximum in 3D Graphene Foams".SMALL 14.32(2018):1801458. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
417.pdf(3185KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论