期刊
MATERIALS
卷 15, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/ma15030919
关键词
tin oxides; carbon nanofibers; anode; LIBs; electrospinning
In this study, Sn/SnOx@C composites were prepared using electrospinning method, which showed greatly improved performance compared to conventional electrodes. The electrodes exhibited fast kinetics and stable cycling performance, making them promising for low-cost lithium-ion batteries.
Low-cost and simple methods are constantly chased in order to produce less expensive lithium-ion batteries (LIBs) while possibly increasing the energy and power density as well as the volumetric capacity in order to boost a rapid decarbonization of the transport sector. Li alloys and tin-carbon composites are promising candidates as anode materials for LIBs both in terms of capacity and cycle life. In the present paper, electrospinning was employed in the preparation of Sn/SnOx@C composites, where tin and tin oxides were homogeneously dispersed in a carbonaceous matrix of carbon nanofibers. The resulting self-standing and light electrode showed a greatly enhanced performance compared to a conventional electrode based on the same starting materials that are simply mixed to obtain a slurry then deposited on a Cu foil. Fast kinetics were achieved with more than 90% of the reaction that resulted being surface-controlled, and stable capacities of about 300 mAh/g over 500 cycles were obtained at a current density of 0.5 A/g.
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