Functionalized N-doped interconnected carbon nanofibers as an anode material for sodium-ion storage with excellent performance

被引：592

作者：

Wang, Zhaohui ^{[1
]}

Qie, Long ^{[1
]}

Yuan, Lixia ^{[1
]}

Zhang, Wuxing ^{[1
]}

Hu, Xianluo ^{[1
]}

Huang, Yunhui ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China

来源：

CARBON | 2013年 / 55卷

关键词：

RATE CAPABILITY; HIGH-CAPACITY; LITHIUM-ION; ELECTROCHEMICAL PERFORMANCE; ELECTRODE MATERIALS; CATHODE MATERIAL; BATTERIES; NITROGEN; NANOTUBES; INSERTION;

D O I：

10.1016/j.carbon.2012.12.072

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：

The electrochemical performance of sodium-ion battery was improved by using functionalized interconnected N-doped carbon nanofibers (FN-CNFs) as the anode. The material was synthesized with polypyrrole as precursor by a simple method. The FN-CNF electrode exhibits excellent rate capability and cycling stability, delivering a capacity of 134.2 mAh g(-1) at a high current density of 200 mA g(-1) after 200 cycles and retains a capacity of 73 mAh g(-1) even at an extremely high current density of 20 A g(-1). The superior performance can be attributed to N-doped sites and functionalized groups, which are capable of capturing sodium ions rapidly and reversibly through surface adsorption and surface redox reactions. (C) 2012 Elsevier Ltd. All rights reserved.

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页码：328 / 334

页数：7

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