Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell

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	Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell
	S. H. Liu; Z. Ying; Z. M. Wang; F. Li; S. O. Bai; L. Wen; H. M. Cheng
	2008
发表期刊	New Carbon Materials
ISSN	1007-8827
卷号	23 期号:1 页码:30-36
摘要	Two kinds of modified natural graphite (MNG) spheres with a pyrolytic carbon shell on smooth or granular surface were obtained using fluidized bed chemical vapor deposition of acetylene by adjusting the reaction parameters. The core of the NING has a highly ordered graphite structure and the shell has a disordered structure. Compared with natural graphite (NG) spheres, MNG with a core-shell structure shows improved first cycling efficiency and cyclability. Especially, the NING spheres with a granular surface possess 84% retention of the first discharge capacity after 41 cycles, owing to effective decrease of the contact resistance and increase of contact area between the NING spheres.
部门归属	[liu shu-he; ying zhe; wang zuo-ming; li feng; bai shuo; wen lei; cheng hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;shliu@imr.ac.cn cheng@imr.ac.cn
关键词	Fluidized Bed Chemical Vapor Deposition Core-shell Structure Pyrolytic Carbon Modified Natural Graphite Lithium Ion Secondary Battery Lithium-ion Batteries Chemical-vapor-deposition 1st-cycle Charge Loss Anode Material Encapsulated Graphite Surface-area Infiltration Performance Improvement Pyrocarbon
URL	查看原文
WOS记录号	WOS:000254733700007
引用统计	被引频次：19[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/321006/32961
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. H. Liu,Z. Ying,Z. M. Wang,et al. Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell[J]. New Carbon Materials,2008,23(1):30-36.
APA	S. H. Liu.,Z. Ying.,Z. M. Wang.,F. Li.,S. O. Bai.,...&H. M. Cheng.(2008).Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell.New Carbon Materials,23(1),30-36.
MLA	S. H. Liu,et al."Improving the electrochemical properties of natural graphite spheres by coating with a pyrolytic carbon shell".New Carbon Materials 23.1(2008):30-36.