期刊
ELECTROCHIMICA ACTA
卷 219, 期 -, 页码 356-362出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.023
关键词
hollow carbon nanosphere; Fe3O4 nanoparticle; Li-ion battery; anode
资金
- National Natural Science Foundation of China [51202096, 21464008]
- Science and Technology Foundation [20121BBE50024]
- Natural Science Foundation of Jiangxi Province [20143ACB21015]
- General Research Funds from Hong Kong RGC [15206415, 529313]
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.
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