Authors: Weili Lu Chenghao Luo Yu Li Yiyu Feng Wei Feng Yunhui Zhao Xiaoyan Yuan
Publish Date: 2013/08/08
Volume: 15, Issue: 9, Pages: 1736-
Abstract
CoSn/carbon composite nanofibers were prepared by electrospinning followed by heat treatment Uniform morphologies and microstructures were observed by scanning electron microscopy highresolution transmission electron microscopy and Xray diffraction The results demonstrated that welldispersed nanoparticles of CoSn intermetallic compound and Sn with diameter of about 30–50 nm embedded in carbon nanofibers were prepared after carbonization at 850 °C Compared with pure carbon nanofibers without the nanoparticles CoSn/carbon composite nanofibers showed a high reversible capacity and excellent cycling performance resulting from the formation of CoSn intermetallic nanoparticles and buffering by the carbon nanofiber matrix The nanofiber mats with good flexibility were utilized as anodes in lithiumion batteries and the CoSn/carbon composite nanofibers exhibited a good fibrous morphology after the discharge/charge processes Results indicated that electrospinning could be a feasible method to prepare Co–Sn–C composite nanofibers as anodes in lithiumion batteries
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