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Novel silicon/carbon nano-branches synthesized by reacting silicon. with methyl chloride: A high performing anode material in lithium ion battery
Ren, Wenfeng1,2; Wang, Yanhong1; Tan, Qiangqiang1; Zhong, Ziyi3; Su, Fabing1
2016-11-15
发表期刊JOURNAL OF POWER SOURCES
ISSN0378-7753
卷号332期号:NOV页码:88-95
摘要

To overcome the existing technical barriers of pulverization and fast capacity fading of Si/C composite anodes in lithium ion batteries and to low their production cost, we have developed a facile method for preparing Si/C nano-branches (Si/C NBs) by reacting commercial Si microparticles directly with CH3Cl gas over Cu-based catalyst particles followed by a simple post treatment. The samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and Raman spectroscopy. It was found that the diameter and the length of Si/C NBs were similar to 70 nm and similar to 6 mu m, respectively. When used as the anode materials for lithium ion batteries, they displayed excellent electrochemical properties with an average specific capacity of 849 mA h g(-1) at a current density of 50 mA g(-1). The much improved electrochemical performance is attributed to the unique branched nanostructure and the coated carbon layer on the surface, which can effectively increase the electrical conductivity and buffer the volume change. This work provides a simple and low-cost route to prepare Si/C anode materials with novel branched nanostructure for lithium ion batteries. (C) 2016 Elsevier B.V. All rights reserved.

关键词Silicon/carbon Nano-branches Fixed Bed Lithium Ion Batteries Anode Materials
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jpowsour.2016.09.110
收录类别SCI
语种英语
关键词[WOS]SCALABLE SYNTHESIS ; CARBON NANOTUBES ; ROCHOW REACTION ; SI ANODE ; STORAGE ; NANOPARTICLES ; NANOSPHERES ; ELECTRODES ; LITHIATION ; NANOCOMPOSITE
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
项目资助者National Natural Science Foundation of China(51272252 ; Hundred Talents Program of the Chinese Academy of Sciences ; 51402302 ; 51402299)
WOS记录号WOS:000386643000012
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21590
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Astar, Inst Chem Engn & Sci, 1 Pesek Rd, Jurong Isl 627833, Singapore
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Ren, Wenfeng,Wang, Yanhong,Tan, Qiangqiang,et al. Novel silicon/carbon nano-branches synthesized by reacting silicon. with methyl chloride: A high performing anode material in lithium ion battery[J]. JOURNAL OF POWER SOURCES,2016,332(NOV):88-95.
APA Ren, Wenfeng,Wang, Yanhong,Tan, Qiangqiang,Zhong, Ziyi,&Su, Fabing.(2016).Novel silicon/carbon nano-branches synthesized by reacting silicon. with methyl chloride: A high performing anode material in lithium ion battery.JOURNAL OF POWER SOURCES,332(NOV),88-95.
MLA Ren, Wenfeng,et al."Novel silicon/carbon nano-branches synthesized by reacting silicon. with methyl chloride: A high performing anode material in lithium ion battery".JOURNAL OF POWER SOURCES 332.NOV(2016):88-95.
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