Hollow carbon nanosphere embedded with ultrafine Fe3O4 nanoparticles as high performance Li-ion battery anode

被引：27
作者：
Liu, Lang [1 ]
Zhang, Hua [1 ]
Liu, Shuwu [1 ]
Yao, Haimin [2 ]
Hou, Haoqing [1 ]
Chen, Shuiliang [1 ]
机构：
[1] Jiangxi Normal Univ, Dept Chem & Chem Engn, Nanchang 330022, Peoples R China
[2] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2016年 / 219卷
基金：
中国国家自然科学基金;
关键词：
hollow carbon nanosphere; Fe3O4; nanoparticle; Li-ion battery; anode; POLYOL-MEDIATED SYNTHESIS; CORE-SHELL NANOPARTICLES; ONE-POT SYNTHESIS; ELECTROCHEMICAL PERFORMANCE; COMPOSITE MICROSPHERES; METAL-OXIDES; LITHIUM; STORAGE; NANOCRYSTALS; DOPAMINE;
D O I：
10.1016/j.electacta.2016.10.023
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Hollow carbon nanospheres embedded with ultrafine Fe3O4 nanoparticles (Fe3O4@HCNS) were synthesized by using carboxyl functionalized polystyrene latexes as template and poly dopamine as carbon precursor. The ultrafine Fe3O4 nanoparticles (NPs) had a small size of 3 similar to 5 nm and the HCNS had a thin shell thickness of 15 nm in the Fe3O4@HCNS. As a promising anode material for lithium-ion batteries, the Fe3O4@HCNS exhibited high reversible capacity, excellent cycling stability (1380 mA h g(-1) after 200 cycles at 1 A g(-1)) and high-rate capability (475 mA h g(-1) at 5 A g(-1), 290 mA h g(-1) at 10 A g(-1)). The outstanding performance was attributed to the unique structure of the Fe3O4@HCNS, which greatly shorten the path of Li ions intercalation during charging and discharging. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：356 / 362
页数：7
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