The Effect of Ge on the Electrochemical Performance of Sn/C Nanocomposite Anode Materials for Lithium Ion Batteries

Autor: Deng, Jian Qiu, Pan, Jin, Chen, Tian, Qin, Hai Qing, Liu, Wen Ping, Yao, Qing Rong, Wang, Zhong Min, Zhou, Huai Ying
Zdroj: Advanced Materials Research; March 2015, Vol. 1094 Issue: 1 p229-233, 5p
Abstrakt: nanosized Sn-Ge/C composite powders were successfully prepared by rocking vibratory ball milling method, and characterized with X-ray powder diffraction and laser particle size analysis method. The electrochemical performance of the nanocomposite anodes was investigated by charge-discharge tests. The results show that Ge exhibits as the elemental form in the nanocomposites. The capacity of nanocomposite anodes can be enhanced by the introduction of micro-sized Ge powders. The Sn90Ge10/C nanocomposite anodes deliver the optimum electrochemical performance, including discharge capacity and cycling stability. However, the relatively fast capacity fade of the nanocompsoite anodes need to be further improved.
Databáze: Supplemental Index