Nitrogen-doped porous interconnected double-shelled hollow carbon spheres with high capacity for lithium ion batteries and sodium ion batteries

被引：168

作者：

Zhang, Kailong ^{[1
]}

Li, Xiaona ^{[1
]}

Liang, Jianwen ^{[1
]}

Zhu, Yongchun ^{[2
]}

Hu, Lei ^{[1
]}

Cheng, Qiushi ^{[1
]}

Guo, Cong ^{[2
]}

Lin, Ning ^{[1
]}

Qian, Yitai ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[3] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2015年 / 155卷

关键词：

Lithium ion batteries; Sodium ion batteries; Nitrogen doping; Double-shelled; Hollow carbon spheres; NATURAL GRAPHITE; ANODE MATERIALS; RATE CAPABILITY; NANOSPHERES; PERFORMANCE; STORAGE; FUNCTIONALIZATION; PURIFICATION; NANOTUBES; ENERGY;

D O I：

10.1016/j.electacta.2014.12.108

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nitrogen-doped porous interconnected double-shelled hollow carbon spheres (N-DHCSs) have been synthesized by chemical treatment of Fe3O4@C precursors using HNO3 at low temperature. When the precursors are disposed with HCl or H2SO4, uniform porous interconnected double-shelled hollow carbon spheres (DHCSs) are prepared. Comparing with DHCSs, the as-prepared N-DHCSs show higher Li-storage capacity and both show good cycling stability as anode materials in lithium ion batteries. The N-DHCSs offer a capacity of 512 mA h g (1) at 1.5 C after 500 cycles and their porous interconnected double-shelled hollow structure could be well kept. The N-DHCSs also show high reversible capacity of 598 mA h g (1) at 1 C after cycled at different current densities. In addition, the N-DHCSs as anode materials in sodium half-cell exhibit high reversible capacity of 120 mA h g (1) at a current rate of 0.2 A g (1) after 100 cycles. (C) 2015 Published by Elsevier Ltd.

引用

页码：174 / 182

页数：9

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