Journal
JOURNAL OF POWER SOURCES
Volume 329, Issue -, Pages 422-427Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2016.08.104
Keywords
Lithium-ion battery; Anode; Carbon nanotube capsule; Emulsion technique; Magnesiothermic reduction; High performance
Funding
- National Natural Science Foundation of China [21376001, 21576028, 21506012]
- Foundation for Basic Research of Beijing Institute of Technology [20141042003, 20151042001]
Ask authors/readers for more resources
Carbon nanotubes have attracted widespread attention as ideal materials for Lithium-ion batteries (LIBs) due to their excellent conductivity, mechanical flexibility, chemical stability and extremely large surface area. Here, three-dimensional (3D) silicon/carbon nanotube capsule composites (Si/CNCs) are firstly prepared via water-in-oil (W/O) emulsion technique with more than 75 wt% loading amount of silicon. CNCs with unique hollow sphere structure act as a 3D interconnected conductive network skeleton, and the cross-linked carbon nanotubes (CNTs) of CNCs can effectively enhance the strength, flexibility and conductivity of the electrode. This Si/CNCs can not only alleviate the volume expansion, but also effectively improve the electrochemical performance of the LIBs. Such Si/CNCs electrode with the unique structure achieves a high initial discharge specific capacity of 2950 mAh g(-1) and retains 1226 mAh g(-1) after 100 cycles at 0.5 A g(-1), as well as outstanding rate performance of 547 mAh g(-1) at 10 A g(-1). (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available