Proceedings of the 2015 International Conference on Materials Engineering and Information Technology Applications

Preparation of Si/C composite nanofibers by electrospinning method using as the lithium-ion battery anode

Authors
Yueqin Ban, Weiquan Shao, Shaou Chen, Lizhu He, Hailing Zhu, Jiajia Feng, Xiaojie Guo, Yanqiang Li, Haifeng Zhao, Yingnan Zhang
Corresponding Author
Yueqin Ban
Available Online August 2015.
DOI
https://doi.org/10.2991/meita-15.2015.134How to use a DOI?
Keywords
Lithium-ion battery anode; Si nanoparticles; Carbon coating; Electrospinning
Abstract

Si was a promising anode material for next-generation LIBs due to its extremely large capacity of 4200mAh/g-1 (Li4.4Si phase). However, during repeated lithium insertion/extraction processes, the accompanied huge volume change (400%) induced the structural failure of the active material and resulted in rapid capacity fading. To overcome this problem, Si/C composite nanofibers with porous structure were prepared through a facile electrospinning method. The inclusion of carbon not only worked as a stable electric conductive pathway but also buffered the volume expansion of silicon during the process of charging and discharging. The first discharge capacity of the composite nanofiber (26wt..% and 50wt.% Si) electrode reaches 1840 mAh/g 1, 2042mAh/g 1, and it delivered a charge capacity of 1461mAh/g 1, 1644mAh/g 1 at the first cycle, corresponding to an initial coulombic efficiency of 79% and 80%. In contrast, the cell with the pure Si nanoparticle exhibited an initial discharge/charge capacity of 18 and 13mAh/g 1, respectively, which was much lower than the composite nanofiber electrode.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2015 International Conference on Materials Engineering and Information Technology Applications
Series
Advances in Engineering Research
Publication Date
August 2015
ISBN
978-94-6252-103-2
ISSN
2352-5401
DOI
https://doi.org/10.2991/meita-15.2015.134How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Yueqin Ban
AU  - Weiquan Shao
AU  - Shaou Chen
AU  - Lizhu He
AU  - Hailing Zhu
AU  - Jiajia Feng
AU  - Xiaojie Guo
AU  - Yanqiang Li
AU  - Haifeng Zhao
AU  - Yingnan Zhang
PY  - 2015/08
DA  - 2015/08
TI  - Preparation of Si/C composite nanofibers by electrospinning method using as the lithium-ion battery anode
BT  - Proceedings of the 2015 International Conference on Materials Engineering and Information Technology Applications
PB  - Atlantis Press
SP  - 739
EP  - 743
SN  - 2352-5401
UR  - https://doi.org/10.2991/meita-15.2015.134
DO  - https://doi.org/10.2991/meita-15.2015.134
ID  - Ban2015/08
ER  -