Dopamine derived nitrogen-doped carbon sheets as anode materials for high-performance sodium ion batteries

被引:180
|
作者
Yang, Fuhua [1 ]
Zhang, Zhian [1 ]
Du, Ke [1 ]
Zhao, Xingxing [1 ]
Chen, Wei [1 ]
Lai, Yanqing [1 ]
Li, Jie [1 ]
机构
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
关键词
SUPERIOR RATE CAPABILITY; ULTRALONG CYCLE LIFE; LITHIUM STORAGE; LOW-COST; NANOFIBERS; INSERTION; ELECTRODES; NANOSHEETS; COMPOSITE; GERMANIUM;
D O I
10.1016/j.carbon.2015.04.049
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Designed as an anode material for sodium ion batteries, nitrogen-doped carbon sheets (NCSs) were successfully synthesized using graphene and dopamine as template and carbon precursor, respectively. The NCSs demonstrate high reversible capacity and excellent rate performance, delivering a high reversible capacity of 382 mAh g(-1) at 50 mA g(-1) after 55 cycles. Even up to 10 A g(-1), a rate capacity of 75 mAh g(-1) can be obtained. Furthermore, NCSs also have remarkable cycling stability with specific capacity of 165 mAh g(-1) after 600 cycles (under 200 mA g(-1)). The excellent performance of NCSs can be ascribed to the nitrogen-doped two-dimension sheet structure. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:88 / 95
页数:8
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