Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene

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	Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene
	Zhao, YL ; Feng, JG ; Liu, X ; Wang, FC ; Wang, LF ; Shi, CW ; Huang, L ; Feng, X ; Chen, XY ; Xu, L ; Yan, MY ; Zhang, QJ ; Bai, XD ; Wu, HA ; Mai, LQ
刊名	NATURE COMMUNICATIONS
	2014
卷号	5
ISSN号	2041-1723
通讯作者	Wu, HA (reprint author), Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China.
中文摘要	High-energy lithium battery materials based on conversion/alloying reactions have tremendous potential applications in new generation energy storage devices. However, these applications are limited by inherent large volume variations and sluggish kinetics. Here we report a self-adaptive strain-relaxed electrode through crumpling of graphene to serve as high-stretchy protective shells on metal framework, to overcome these limitations. The graphene sheets are self-assembled and deeply crumpled into pinecone-like structure through a contraction-strain-driven crumpling method. The as-prepared electrode exhibits high specific capacity (2,165 mAh g(-1)), fast charge-discharge rate (20 A g(-1)) with no capacity fading in 1,000 cycles. This kind of crumpled graphene has self-adaptive behaviour of spontaneous unfolding-folding synchronized with cyclic expansion-contraction volumetric variation of core materials, which can release strain and maintain good electric contact simultaneously. It is expected that such findings will facilitate the applications of crumpled graphene and the self-adaptive materials.
资助信息	National Natural Basic Research Program of China [2013CB934103, 2012CB933003]; International Science and Technology Cooperation Program of China [2013DFA50840]; National Natural Science Foundation of China [51272197, 51302203]; Fundamental Research Funds for the Central Universities [2013-ZD-7, 2013-yb-001, 2014-yb-002]; National Natural Science Foundation of China; Anhui Provincial Natural Science Foundation; Fundamental Research Funds for the Central Universities of China
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59382]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhao, YL,Feng, JG,Liu, X,et al. Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene[J]. NATURE COMMUNICATIONS,2014,5.
APA	Zhao, YL.,Feng, JG.,Liu, X.,Wang, FC.,Wang, LF.,...&Mai, LQ.(2014).Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene.NATURE COMMUNICATIONS,5.
MLA	Zhao, YL,et al."Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene".NATURE COMMUNICATIONS 5(2014).