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Nanomaterials (Basel). 2019 Jul 28;9(8). pii: E1084. doi: 10.3390/nano9081084.

Facile Synthesis of Sn/Nitrogen-Doped Reduced Graphene Oxide Nanocomposites with Superb Lithium Storage Properties.

Author information

1
Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
2
Hubei Wanrun New Energy Technology Development Co., Ltd., Shiyan 442500, China.
3
Hubei Wanrun New Energy Technology Development Co., Ltd., Shiyan 442500, China. hupeisysdoing@hust.edu.cn.
4
State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. hupeisysdoing@hust.edu.cn.
5
Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China. qie@tongji.edu.cn.

Abstract

Sn/Nitrogen-doped reduced graphene oxide (Sn@N-G) composites have been successfully synthesized via a facile method for lithium-ion batteries. Compared with the Sn or Sn/graphene anodes, the Sn@N-G anode exhibits a superb rate capability of 535 mAh g-1 at 2C and cycling stability up to 300 cycles at 0.5C. The improved lithium-storage performance of Sn@N-G anode could be ascribed to the effective graphene wrapping, which accommodates the large volume change of Sn during the charge-discharge process, while the nitrogen doping increases the electronic conductivity of graphene, as well as provides a large number of active sites as reservoirs for Li+ storage.

KEYWORDS:

N doping; Sn anode; graphene nanocomposites; lithium-ion batteries; rate performance

PMID:
31357731
DOI:
10.3390/nano9081084
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