Preparation of Si/C composite nanofibers by electrospinning method using as the lithium-ion battery anode
- 10.2991/meita-15.2015.134How to use a DOI?
- Lithium-ion battery anode; Si nanoparticles; Carbon coating; Electrospinning
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.
- © 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 - 10.2991/meita-15.2015.134 ID - Ban2015/08 ER -