Sn/C non-woven film prepared by electrospinning as anode materials for lithium ion batteries
Sn/C non-woven film prepared by electrospinning as anode materials for lithium ion batteries
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DOI：
10.1016/j.jpowsour.2009.08.052
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发表时间：
2010-02
影响因子：
9.2
通讯作者：
Lin Zou;Lin Gan;F. Kang;Mingxi Wang;W. Shen;Zhenghong Huang
中科院分区：
文献类型：
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作者：
Lin Zou;Lin Gan;F. Kang;Mingxi Wang;W. Shen;Zhenghong Huang
采用静电纺丝和碳化处理方法制备了SnC无纺布薄膜。扫描电子显微镜、透射电子显微镜和高分辨电子显微镜的研究表明，薄膜是由无纺布纤维形成的。纤维由无定形碳和均匀分散的TiN颗粒组成，这些颗粒非常微小(约1 nm)。而薄膜在空气中停留时，部分TiN颗粒被氧化，这一点得到了X射线衍射仪的证实。X射线衍射测试还表明，锡氧化物经过几次电化学循环后，完全分解为纯的锡。第20次循环的可逆容量为382mAhg−1，是首次循环容量的96.7%。该非织造膜有望成为锂离子电池负极材料。
Sn/C non-woven film has been prepared by electrospinning and carbonization treatment. Investigation of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM) indicate that the film is formed by non-woven fibers. The fibers consist of amorphous carbon and homogeneously dispersed tin particles, which are extremely tiny (around 1nm). However, partial tin particles are oxidized when the film is kept in the air, which is confirmed by X-ray diffraction (XRD). The XRD measurement also suggests that the tin oxides completely decompose to pure tin after several electrochemical cycles. The reversible capacity of the film in the 20th cycle is 382mAhg−1, which is 96.7% of the capacity in the first cycle. Such Sn/C non-woven film could be a promising anode material in lithium ion batteries.