期刊
JOURNAL OF MATERIALS SCIENCE
卷 52, 期 12, 页码 6969-6975出版社
SPRINGER
DOI: 10.1007/s10853-017-0929-5
关键词
-
资金
- Chunhui Program of Ministry of Education, China [Z2014015]
- Natural Science Foundation of Qinghai Province, China [2016-ZJ-934Q]
Interconnected fullerene-like carbon nanofibers encapsulated with tin nanoparticles (Sn@FLCNFs) were synthesized by a facile and scalable electrospinning method using fullerene-like carbon nanoparticles and PVP as carbon sources. SEM and TEM revealed that Sn nanoparticles have been uniformly embedded into the nanofibers. The self-supported Sn@FLCNFs could be directly used as an anode of lithium-ion battery without adding any polymer and binder; it showed a high initial coulombic efficiency. A reversible capacity as high as 846 mA h g(-1) remained after 100 cycles at a current density of 0.2 A g(-1). When the current density was raised to 1 A g(-1), the reversible capacity maintained 656 mA h g(-1) after 300 cycles. The excellent electrochemical performance can be attributed to the formation of the efficient Li-ions diffusion paths and highly conductive cross-linked network in the Sn@FLCNFs electrode, and the interconnected carbon framework can prevent the Sn nanoparticles from pulverization and re-aggregation during cycles.
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