Nitrogen-doped mesoporous hollow carbon nanoflowers as high performance anode materials of lithium ion batteries

作者：Qian, Chen; Guo, Ping; Zhang, Xiue; Zhao, Rongfang; Wu, Qianhui; Huan, Long; Shen, Xiao; Chen, Ming^*

来源：RSC Advances, 2016, 6(96): 93519-93524.

DOI：10.1039/c6ra21011b

• OXYGEN REDUCTION REACTION
• HIGH-RATE CAPABILITY
• METAL-FREE ELECTROCATALYSTS
• CYCLIC PERFORMANCE
• HIGH-CAPACITY
• GRAPHENE
• STORAGE
• SPHERES
• PHOSPHORUS
• NANOTUBES

Nitrogen-doped mesoporous hollow carbon nanoflowers (N-HCNF) are successfully prepared by a facile hard-template route via a hydrothermal process, subsequent carbonization and etching. The assynthesized N-HCNF has high specific surface area (507.5 m(2) g(-1)) and unique nanostructure, which make N-HCNF a potential anode material for lithium ion batteries. In the electrochemical test, the asprepared N-HCNF exhibit high specific capacity, markedly improve cycle stability, and enhance rate performance compared with nitrogen-doped hollow carbon nanorods (N-HCNR) and hollow carbon nanoflowers (HCNF). The as-prepared N-HCNF displays a reversible specific capacity of 528 mA h g(-1) after 1000 cycles at 2C. N-HCNF shows the excellent rate performance and the stable capacity of N-HCNF maintains 298 mA h g(-1) at 10C. The significant electrochemical property improvements of N-HCNF are attributed to the large BET surface area, N-doped carbon shell and unique 3D hollow nanostructure of N-HCNF.

• 出版日期2016
• 单位扬州市职业大学; 扬州大学