Lithiation/ Delithiation Process of Silicon-Carbon Composites Prepared by Mechanical Alloying

Abstract:

In this study, graphite doped silicon was prepared by mechanical alloying (MA). MA is an effective method to manufacture silicon-carbon composite. The results show that the capacity retention ability of the graphite doped silicon by MA anode is better than silicon. The fellow result shows that Li_aC_b appears at the middle of lithiation process and disappear with the production of Li_xSi_y, Li_xSi_y produce and disappears at the end of lithiation process and beginning of delithiation process respectively. The SEI film enhanced with the increasing amount of lithium and silicon-carbon composite material was severely decomposed with the cycles increase.

• Periodical: Materials Science Forum (Volume 814)
• Pages: 49-53
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.814.49
• Online since: March 2015
• Authors: Ya Feng Ang, Xin Yi Ren, Zhen Bo Dou, Xun Yong Jiang*
• Keywords: Delithiation Process, Lithiation Process, Mechanical Alloying, Silicon-Carbon Composites

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