A sandwich structure of graphene and nickel oxide with excellent supercapacitive performance

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	A sandwich structure of graphene and nickel oxide with excellent supercapacitive performance
	W. Lv; F. Sun; D. M. Tang; H. T. Fang; C. Liu; Q. H. Yang; H. M. Cheng
	2011
发表期刊	Journal of Materials Chemistry
ISSN	0959-9428
卷号	21 期号:25 页码:9014-9019
摘要	Hybrid structures combining graphene nanosheets (GNSs) and metal oxide nanoparticles (NPs) are increasingly attracting researchers due to their potential applications in electrochemical energy storage. Such hybrid structures reported thus far are mostly in random organizations of nanosheets anchored with NPs and macroscopically exist in powder aggregates. In this work, a sandwich structure of GNSs and oxide NPs that are macroscopically a free-standing membrane is reported, and a multi-step strategy conducted under "homogenous" and "mild" conditions is developed to ensure the successful fabrication of the membrane-like structure. Both components, tightly fixed NPs and planar GNSs as the skeleton of such sandwich structures, can avoid aggregation or stacking during electrochemical charge-discharge cycling, which effectively maintains the active surface and leaves stable and open channels for ion transport. Such a layered sandwich structure also acts as an ideal strain buffer to accommodate volume changes of the NPs in a fixed direction, and thus has a better resilience and structural stability in the electrochemical charge/discharge process. Hence, such a GNS/NP sandwich structure represents an ideal structure for electrochemical energy storage and a solution for easy manipulation for various applications due to the membrane morphology.
部门归属	[lv, wei; sun, feng; yang, quan-hong] tianjin univ, sch chem engn & technol, minist educ, key lab green chem technol, tianjin 300072, peoples r china. [tang, dai-ming; liu, chang; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [fang, hai-tao] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china.;yang, qh (reprint author), tianjin univ, sch chem engn & technol, minist educ, key lab green chem technol, tianjin 300072, peoples r china;qhyangcn@tju.edu.cn
关键词	Lithium Ion Batteries Electrochemical Properties Reversible Capacity Nanocomposite Anode Ruo2
URL	查看原文
WOS记录号	WOS:000291611600014
引用统计	被引频次：131[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30580
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Lv,F. Sun,D. M. Tang,et al. A sandwich structure of graphene and nickel oxide with excellent supercapacitive performance[J]. Journal of Materials Chemistry,2011,21(25):9014-9019.
APA	W. Lv.,F. Sun.,D. M. Tang.,H. T. Fang.,C. Liu.,...&H. M. Cheng.(2011).A sandwich structure of graphene and nickel oxide with excellent supercapacitive performance.Journal of Materials Chemistry,21(25),9014-9019.
MLA	W. Lv,et al."A sandwich structure of graphene and nickel oxide with excellent supercapacitive performance".Journal of Materials Chemistry 21.25(2011):9014-9019.