The mechanical behavior and collapse of graphene-assembled hollow nanospheres under compression

doi:10.1016/j.carbon.2020.11.040

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	The mechanical behavior and collapse of graphene-assembled hollow nanospheres under compression
	Zhao, Yifan 1,6; Zhao, Yushun 1; Wu, Fan 1,6; Zhao, Yue 1,6; Wang, Yaming 5; Sui, Chao 1; He, Xiaodong 1,2; Wang C(王超)3,4; Tan, Huifeng 1,6; Wang, Chao 1
刊名	CARBON
	2021-03-01
卷号	173 页码:600-608
关键词	Graphene Hollow nanosphere In-situ test Compressive mechanical properties
ISSN号	0008-6223
DOI	10.1016/j.carbon.2020.11.040
通讯作者	Wang, Chao(wangchao@lnm.imech.ac.cn) ; Tan, Huifeng(tanhf@hit.edu.cn) ; Wang, Chao(chaowang@hit.edu.cn)
英文摘要	Recently, much interest has been attracted in the graphene-assembled hollow nanospheres (GAHNs) because of outstanding multi-functional properties. This paper systematically explores the compressive mechanical behaviors and gas bearing capability of GAHNs by a coarse-grained molecular dynamics (CGMD) simulation combining with in-situ compressive test. It was found that the GAHNs possess excellent compressive elasticity (experimentally recoverable strain can reach similar to 58%). Under large compressive strain (>90%), the GAHNs also display obvious plastic deformation owing to inter-layer slippage between graphene nanosheets. In addition, the morphology of force measurement tip (FMT) plays critical roles on the compressive failure modes of GAHNs. When FMT is sharp, it can pierce through the shell of GAHN, whereas the blunt one compels GAHN to collapse. The thermal expansion process of GAHNs was investigated by CGMD simulation. With the increase of ambient temperature, the internal pressure of GAHN increased until a crack appears. To further understand this expansion failure, an in-situ scratching experiment was designed and the tearing strength of shell of GAHN was estimated to be similar to 748 MPa. This work provides an in-depth understanding on intrinsic mechanical properties of GAHNs and broadens their potential applications. (C) 2020 Elsevier Ltd. All rights reserved.
分类号	一类
资助项目	National Natural Science Foundation of China[11872164] ; National Natural Science Foundation of China[51702064] ; National Key Research and Development Program of China[2018YFA0702802] ; Shenzhen Science and Technology Program[KQTD2016112814303055]
WOS研究方向	Chemistry ; Materials Science
语种	英语
WOS记录号	WOS:000625347900023
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Shenzhen Science and Technology Program
其他责任者	Wang, Chao ; Tan, Huifeng ; Wang, Chao
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86183]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150080, Peoples R China; 2.Shenzhen STRONG Adv Mat Res Inst Co Ltd, Shenzhen, Peoples R China; 3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 5.Harbin Inst Technol, Sch Mat Sci & Engn, Dept Mat Sci, Harbin 150001, Peoples R China 6.Harbin Inst Technol, Natl Key Lab Sci & Technol Natl Def Adv Composite, Harbin 150001, Peoples R China;
推荐引用方式 GB/T 7714	Zhao, Yifan,Zhao, Yushun,Wu, Fan,et al. The mechanical behavior and collapse of graphene-assembled hollow nanospheres under compression[J]. CARBON,2021,173:600-608.
APA	Zhao, Yifan.,Zhao, Yushun.,Wu, Fan.,Zhao, Yue.,Wang, Yaming.,...&Wang, Chao.(2021).The mechanical behavior and collapse of graphene-assembled hollow nanospheres under compression.CARBON,173,600-608.
MLA	Zhao, Yifan,et al."The mechanical behavior and collapse of graphene-assembled hollow nanospheres under compression".CARBON 173(2021):600-608.