CAS OpenIR  > 研究所(批量导入)
Synthesis of porous microspheres composed of graphitized carbon@amorphous silicon/carbon layers as high performance anode materials for Li-ion batteries
Alternative TitleRSC Adv.
Zhang, Zailei1; Wang, Yanhong1; Ren, Wenfeng1; Zhong, Ziyi2; Su, Fabing1
2014
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume4Issue:98Pages:55010-55015
AbstractWe report in situ growth of amorphous silicon/carbon (Si/C) layers on graphitized carbon black (GCB) particles in porous microspheres (PMs) for formation of novel GCB@Si/C PMs as high performance anode materials. The preparation included spray drying, KOH activation and chemical vapor deposition at 900 degrees C, and used methyltrichlorosilane as both the Si and C precursor, which is a cheap byproduct in the organosilane industry. The obtained samples were characterized by X-ray diffraction, thermogravimetric analysis, nitrogen adsorption, transmission electron microscopy, and scanning electron microscopy. Compared with the bare GCB PMs, the GCB@Si/C PMs showed a significantly enhanced electrochemical performance with high lithium storage capacity and excellent cycling stability (the discharge capacity of GCB@Si/C-3 PMs and GCB@Si/C-6 PMs is maintained at 587.2 and 729.7 mA h g(-1) after 200 cycles at a current density of 100 mA g(-1)), because the unique interconnected porous structure within the microspheres could absorb a large portion of Si volume change during Li insertion and extraction reactions, promote the diffusion of Li-ion and electrolyte solution, hinder the cracking or crumbling of the electrode, and additionally, the GCB and amorphous C provide high conductive electron pathway. This work opens a new way for fabrication of Si/C nanocomposites as anode materials for Li-ion batteries.; We report in situ growth of amorphous silicon/carbon (Si/C) layers on graphitized carbon black (GCB) particles in porous microspheres (PMs) for formation of novel GCB@Si/C PMs as high performance anode materials. The preparation included spray drying, KOH activation and chemical vapor deposition at 900 degrees C, and used methyltrichlorosilane as both the Si and C precursor, which is a cheap byproduct in the organosilane industry. The obtained samples were characterized by X-ray diffraction, thermogravimetric analysis, nitrogen adsorption, transmission electron microscopy, and scanning electron microscopy. Compared with the bare GCB PMs, the GCB@Si/C PMs showed a significantly enhanced electrochemical performance with high lithium storage capacity and excellent cycling stability (the discharge capacity of GCB@Si/C-3 PMs and GCB@Si/C-6 PMs is maintained at 587.2 and 729.7 mA h g(-1) after 200 cycles at a current density of 100 mA g(-1)), because the unique interconnected porous structure within the microspheres could absorb a large portion of Si volume change during Li insertion and extraction reactions, promote the diffusion of Li-ion and electrolyte solution, hinder the cracking or crumbling of the electrode, and additionally, the GCB and amorphous C provide high conductive electron pathway. This work opens a new way for fabrication of Si/C nanocomposites as anode materials for Li-ion batteries.
KeywordNanostructured Silicon Secondary Batteries Nanospheres Lithiation Polymerization Nanoparticles Growth Electrodes Nanotubes Catalysts
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c4ra09868d
URL查看原文
Indexed BySCI
Language英语
WOS KeywordNANOSTRUCTURED SILICON ; SECONDARY BATTERIES ; NANOSPHERES ; LITHIATION ; POLYMERIZATION ; NANOPARTICLES ; GROWTH ; ELECTRODES ; NANOTUBES ; CATALYSTS
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000344989800009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11895
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.ASTAR, Inst Chem Engn & Sci, Singapore 627833, Singapore
Recommended Citation
GB/T 7714
Zhang, Zailei,Wang, Yanhong,Ren, Wenfeng,et al. Synthesis of porous microspheres composed of graphitized carbon@amorphous silicon/carbon layers as high performance anode materials for Li-ion batteries[J]. RSC ADVANCES,2014,4(98):55010-55015.
APA Zhang, Zailei,Wang, Yanhong,Ren, Wenfeng,Zhong, Ziyi,&Su, Fabing.(2014).Synthesis of porous microspheres composed of graphitized carbon@amorphous silicon/carbon layers as high performance anode materials for Li-ion batteries.RSC ADVANCES,4(98),55010-55015.
MLA Zhang, Zailei,et al."Synthesis of porous microspheres composed of graphitized carbon@amorphous silicon/carbon layers as high performance anode materials for Li-ion batteries".RSC ADVANCES 4.98(2014):55010-55015.
Files in This Item:
File Name/Size DocType Version Access License
Synthesis of porous (3487KB)期刊论文出版稿限制开放CC BY-NC-NDApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Zailei]'s Articles
[Wang, Yanhong]'s Articles
[Ren, Wenfeng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Zailei]'s Articles
[Wang, Yanhong]'s Articles
[Ren, Wenfeng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Zailei]'s Articles
[Wang, Yanhong]'s Articles
[Ren, Wenfeng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.