期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 223, 期 -, 页码 762-770出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2018.11.066
关键词
Synchronized electrospinning-electrospraying method; Carbon-coated SnO2 nanoparticles; Carbon nanofibers; Anode materials; Lithium-ion batteries
资金
- National Natural Science Foundation of China [11575126, 51708409]
- Natural Science Foundation of Tianjin [16JCYBJC17700]
- Science and Technology Plans of Tianjin [15PTSYJC00230]
In this study, carbon-coated SnO2 nanoparticles were loaded on pure carbon nanofibers ((SnO2@C)/CNFs) by the synchronized electrospinning-electrospraying method and subsequent heat treatment. Compared with SnO2@CNFs composites fabricated by conventional electrospinning method, carbon-coated SnO2 nanoparticles were homogeneously dispersed while attached tightly on CNFs surface with the help of carbon coating. The (SnO2@C)/CNFs composites delivered an outstanding initial discharge capacity of 1425 mAh g(-1) at 100 mA g(-1) and an initial coulombic efficiency of 63.24%. A reversible capacity of similar to 500 mAh g(-1) was also displayed after 50 cycles. Remarkably, the outstanding electrochemical performance of (SnO2@C)/CNFs composites was ascribed to the cooperative effect of external carbon-coated SnO2 nanoparticles and unmarred CNFs three-dimensional interconnection networks. Furthermore, this synchronized electrospinning-electrospraying method was simple, efficient and scalable, providing a potential strategy for lithium-ion battery anode material production.
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