Journal
CARBON
Volume 130, Issue -, Pages 145-152Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.12.126
Keywords
Sodium ion batteries; Carbon-based material; Anode; Capacitive storage
Funding
- National Natural Science Foundation of China [NSFC-51722105]
- Zhejiang Provincial Natural Science Foundation of China [LR18B030001]
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Anode materials have become one of the primary bottlenecks for the development of rechargeable sodium ion batteries. To explore novel carbon-based anodes enabling high performance sodium storage is urgently desirable but remains quite challenging. Herein, we demonstrates excellent sodium storage performance in nitrogen-doped flexible carbon nanofibers as anodes for sodium ion batteries, through engineering capacitive contribution from regulating surface specific area and porosity. Owing to its unique structural feature and uniform nitrogen doping, the derived free-standing carbon nanofibers film achieves a high reversible capacity of 349.1 mAh g(-1) at 50 mA g(-1). Even cycled at a high current density of 1 A g(-1), the electrode still retains a high capacity of 203.1 mAh g(-1) after 1000 extremely stable cycles. The engineering on capacitive contribution in sodium storage might open up possibilities for exploring high performance carbon-based anodes of sodium ion batteries. (C) 2018 Elsevier Ltd. All rights reserved.
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