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Superior cycle stability of nitrogen-doped graphene nanosheets as anodes for lithium ion batteries
被引:341
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
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.
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页码:822 / 825
页数:4
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