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

Cited 135 time in Web of Science Cited 148 time in Scopus
Authors

Lee, Byoung-Sun; Son, Seoung-Bum; Park, Kyu-Min; Seo, Jong-Hyun; Lee, Se-Hee; Choi, In Suk; Oh, Kyu-Hwan; Yu, Woong-Ryeo

Issue Date
2012-05
Publisher
Elsevier BV
Citation
Journal of Power Sources, Vol.206, pp.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 well-developed 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. (C) 2012 Elsevier B.V. All rights reserved.
ISSN
0378-7753
URI
https://hdl.handle.net/10371/203322
DOI
https://doi.org/10.1016/j.jpowsour.2012.01.120
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  • College of Engineering
  • Department of Materials Science & Engineering
Research Area High Temperature Alloys, High Strength , Nano Mechanics and Nano Structure Design for Ultra Strong Materials, Shape and Pattern Design for Engineering Materials

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