Novel mesoporous silicon nanorod as an anode material for lithium ion batteries

作者：Zhou, Yanli; Jiang, Xiaolei; Chen, Liang; Yue, Jie; Xu, Huayun^*; Yang, Jian; Qian, Yitai

来源：Electrochimica Acta, 2014, 127: 252-258.

DOI：10.1016/j.electacta.2014.01.158

• Magnesiothermic reduction
• Mesoporous silicon nanorods
• Anode materials
• Lithium ion batteries

Mesoporous silicon nanorods assembled by small nanocrystals were successfully prepared using multiwalled carbon nanotubes (MWCNTs) as a template via a facile magnesiothermic reduction process. The obtained product was characterized by X-ray diffraction, Raman spectroscopy, transmission electron microscopy, nitrogen adsorption-desorption measurement and electrochemical measurements. The resulting mesoporous silicon nanorods as an anode exhibit a significantly improved electrochemical performance compared with the porous silicon networks and bulk silicon. The reversible capacity can retain 1038 mAh g(-1) at 200 mA g(-1) after 170 cycles. Even at a high rate of 2000 mA g-1, a reversible capacity of 664 mAh g(-1) can still be obtained. All these results suggest that the mesoporous silicon nanorods are a promising candidate for the next generation of lithium ion batteries.

• 出版日期2014-5-1
• 单位中国科学技术大学; 山东大学