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Citation: Qi Yang, Tao Sun, Jia-Yu Yu, Jin-Xin Ma. Electrospinning of GeO2-C fibers and electrochemical application in lithium-ion batteries[J]. Chinese Chemical Letters, ;2016, 27(03): 412-416. doi: 10.1016/j.cclet.2015.12.025 shu

Electrospinning of GeO2-C fibers and electrochemical application in lithium-ion batteries

  • 1.

    School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

  • Corresponding author: Qi Yang, 
  • Received Date: 11 September 2015
    Available Online: 7 November 2015

    Fund Project:

  • GeO2-C fibers were successfully synthesized using electrospinning homogeneous sol and subsequent calcination in an inert atmosphere. The spinnable sol was prepared by adding polyacrylonitrile (PAN) and polyvinylpyrrolidone (PVP) in a weight ratio of 1:1 into a mixture with white precipitate produced by dropping GeCl4 into DMF. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to characterize the as-obtained fibers, and electrochemical tests were conducted to measure electrochemical performance of the electrode. The electrospun fibers have uniform diameters of 300 nm. After being calcined at 600℃ for 2 h in Ar, they transform to amorphous GeO2-C fibers with the same morphologies. The GeO2-C fibers exhibit excellent cycling stability with a high reversible capacity of 838.93 mA h g-1 after 100 cycles at a current density of 50 mA g-1, indicating the composite fibers could be promising anode candidates for lithium-ion batteries.
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