Superior cycle stability of nitrogen-doped graphene nanosheets as anodes for lithium ion batteries

被引：342
|
作者：
Li, Xifei [1 ]
Geng, Dongsheng [1 ]
Zhang, Yong [1 ]
Meng, Xiangbo [1 ]
Li, Ruying [1 ]
Sun, Xueliang [1 ]
机构：
[1] Univ Western Ontario, Dept Mech & Mat Engn, Nanomat & Energy Lab, London, ON N6A 5B9, Canada
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 08期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Graphene; Nitrogen doping; Anode; Cycle stability; Lithium ion batteries; CARBON NANOTUBE BUNDLES; STORAGE; CAPACITY; ENERGY; REDUCTION;
D O I：
10.1016/j.elecom.2011.05.012
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The specific capacity of nitrogen-doped graphene nanosheet (N-GNS) evidently increases with charge/discharge cycles, exhibiting superior electrochemical performance. N-GNS presented a specific capacity of 684 mAh g(-1) in the 501st cycles while only 452 mAh g(-1) in the 100th cycle, accounting for higher cycling stability and larger specific capacity in comparison to a pristine graphene and a commercialized graphite anode. The obtained significant improvement is attributed to the incorporated nitrogen to graphene planes with a result of more structural defects during cycling. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：822 / 825
页数：4
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