Novel multi-layered 1-D nanostructure exhibiting the theoretical capacity of silicon for a super-enhanced lithium-ion battery
- Authors
- 배지현
- Issue Date
- Jun-2014
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.6, no.11, pp.5989 - 5998
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCALE
- Volume
- 6
- Number
- 11
- Start Page
- 5989
- End Page
- 5998
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/25854
- DOI
- 10.1039/c4nr00318g
- ISSN
- 2040-3364
- Abstract
- Silicon/carbon (Si/C) nanocomposites have recently received much attention as Li-ion battery negative electrodes due to their mutual synergetic effects in capacity and mechanical integrity. The contribution of Si to the total capacity of the Si/C nanocomposites determines their structural efficiency. Herein, we report on a multi-layered, one-dimensional nanostructure that exhibits the theoretical specific capacity of Si in the nanocomposite. Concentrically tri-layered, compartmentalized, C-core/Si-medium/C-shell nanofibers were fabricated by triple coaxial electrospinning. The pulverization of Si was accommodated inside the C-shell, whereas the conductive pathway of the Li-ions and electrons was provided by the C-core, which was proven by ex situ Raman spectroscopy. The compartmentalized Si in between the C-core and C-shell led to excellent specific capacity at a high current rate (>820 mA h g(-1) at 12000 mA g(-1)) and the realization of the theoretical specific capacity of the Li15Si4 phase of Si nanoparticles (3627 mA h g(-1).). The electrochemical characterization and inductively coupled plasma-atomic emission spectrometry provided direct evidence of full participation of Si in the electrochemical reactions.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 서울 생활과학대학 > 서울 의류학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/25854)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.