Core–shell CNT–Ni–Si nanowires as a high performance anode material for lithium ion batteries

Content Provider	Semantic Scholar
Author	Lu, Congxiang Yang, Yi Tay, Beng Kang Teo, Edwin Hang Tong Zhang, Qing
Copyright Year	2013
Abstract	Core–shell carbon nanotube (CNT)–Si heterogeneous nanowires have been identified as one of the most promising candidates for future anode materials in lithium ion batteries. However, stress in these nanostructures, is the long-existing bottleneck, rendering severe fading of the capacities and even failure of the batteries. We prove that the interfaces between CNT cores and Si shells play a critical role in the stress engineering. With rationally engineered interfaces, our core–shell nanowires with CNT–Ni–Si structure are able to offer excellent capacity retention and rate performance. Introduction of the rough Ni interfacial layer and utilization of the CNT cores lead to reinforced stability of the structure, well accommodated stress and enhanced charge transfer, which are responsible for the improved performance. This core–shell CNT–Ni–Si nanostructure provides a simple but effective pathway towards realization of long lifetime and high performance lithium ion batteries.
Starting Page	54
Ending Page	60
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/j.carbon.2013.06.038
Volume Number	63
Alternate Webpage(s)	http://eeeweba.ntu.edu.sg/BKTay/pub/604.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.carbon.2013.06.038
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article