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

被引:2
|
作者
Qi Yang [1 ]
Tao Sun [1 ]
Jia-Yu Yu [1 ]
Jin-Xin Ma [1 ]
机构
[1] School of Materials Engineering,Shanghai University of Engineering Science
关键词
GeO2; Carbon; Composite fibers; Electrospin; Electrchemical performance;
D O I
暂无
中图分类号
TQ340.64 [纺丝]; TM912 [蓄电池];
学科分类号
0805 ; 080502 ; 0808 ;
摘要
GeO–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 GeClinto 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 8C for 2 h in Ar, they transform to amorphous GeO–C fibers with the same morphologies. The Ge O–C fibers exhibit excellent cycling stability with a high reversible capacity of 838.93 m A h gafter 100 cycles at a current density of 50 m A g, indicating the composite fibers could be promising anode candidates for lithium-ion batteries.
引用
收藏
页码:412 / 416
页数:5
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