Fabrication of Si core/C shell nanofibers and their electrochemical performances as a lithium-ion battery anode

Title
Fabrication of Si core/C shell nanofibers and their electrochemical performances as a lithium-ion battery anode
Authors
이병선손성범박규민서종현이세희최인석오규환Woong-Ryeol Yu
Keywords
Si core/C shell nanofibers; Co-axial electrospinning; Buffering effect; Electrochemical performance
Issue Date
2012-05
Publisher
Journal of power sources
Citation
VOL 206, 267-273
Abstract
This paper reports on Si core/C shell nanofibers as an anode material for Li-ion batteries. The Si core/C shell nanofibers are synthesized using co-axial electrospinning of Si nanoparticles in styrene-co-acrylonitrile core solution and poly(acrylonitrile) shell solution combined with subsequent thermal treatments. The microstructure and elemental composition of the nanofibers are systematically examined using FE-SEM, TEM and WAXD for confirmation of the crystalline Si core/turbostratic C shell structure. In situ observation of contact-lithiation of the Si core/C shell nanofibers is carried out to investigate their mechanical durability during the electrochemical reactions. The electrochemical performances of the nanofibers as an anode are characterized by galvanostatic charge–discharge test. Due to simple processing but a welldeveloped core/shell structure and good electrochemical performance, the Si core/C shell nanofibers fabricated in this study offer the potential to develop enhanced Si/C nanostructured composite anodes.
URI
http://pubs.kist.re.kr/handle/201004/43939
ISSN
03787753
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE