A three layer design with mesoporous silica encapsulated by a carbon   core and shell for high energy lithium ion battery anodes

doi:10.1039/c5ta05879a

CORC > 北京大学 > 地球与空间科学学院

	A three layer design with mesoporous silica encapsulated by a carbon core and shell for high energy lithium ion battery anodes
	Cao, Xi ; Chuan, Xiuyun ; Masse, Robert C. ; Huang, Dubin ; Li, Shuang ; Cao, Guozhong
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2015
关键词	RECHARGEABLE BATTERIES STORAGE PERFORMANCE COMPOSITE SIO2 NANOSPHERES NANOSTRUCTURE NANOMATERIALS ELECTRODE FILM XPS
DOI	10.1039/c5ta05879a
英文摘要	A novel C/SiO2 composite with a carbon-silica-carbon (C-mcms) three layer structure was synthesized and evaluated as an anode material for high-energy lithium ion batteries. The C-mcms exhibits an excellent capacity of about 1055 mA h g(-1) at a current density of 500 mA g(-1) after 150 cycles without detectable decay, and high-rate capability, which is superior to other similar composites without the carbon core or the carbon shell. The results indicate the structural effect on the enhancement of the electrochemical properties: the SiO2 nanoparticles are completely confined between the carbon shell and the carbon core; the two carbon parts work together to keep the structural integrity and to keep the electrode highly conductive and active during cycling, which guarantees high capacity and cycle stability; the interior pores and voids among the SiO2 nanoparticles can provide free space to accommodate the volume change and buffer the volume effect of the electrode during lithiation/delithiation.; National Natural Science Foundation of China [51274015]; National Science Foundation [NSF-DMR 1505902]; China Scholarship Council (CSC); SCI(E); EI; ARTICLE; xychuan@pku.edu.cn; gzcao@u.washington.edu; 45; 22739-22749; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/424798]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Cao, Xi,Chuan, Xiuyun,Masse, Robert C.,et al. A three layer design with mesoporous silica encapsulated by a carbon core and shell for high energy lithium ion battery anodes[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015.
APA	Cao, Xi,Chuan, Xiuyun,Masse, Robert C.,Huang, Dubin,Li, Shuang,&Cao, Guozhong.(2015).A three layer design with mesoporous silica encapsulated by a carbon core and shell for high energy lithium ion battery anodes.JOURNAL OF MATERIALS CHEMISTRY A.
MLA	Cao, Xi,et al."A three layer design with mesoporous silica encapsulated by a carbon core and shell for high energy lithium ion battery anodes".JOURNAL OF MATERIALS CHEMISTRY A (2015).