Novel scalable synthesis of porous silicon/carbon composite as anode material for superior lithium-ion batteries

作者：Tang, Xiaofu; Wen, Guangwu^*; Song, Yan^*

来源：Journal of Alloys and Compounds, 2018, 739: 510-517.

DOI：10.1016/j.jallcom.2017.12.331

• Porous silicon
• Magnesiothermic reduction
• Diatomite
• Lithium-ion batteries

A novel method for scalable fabricating porous silicon/carbon composite as anode material for lithium-ion batteries is reported in this article. Diatomite is used as a raw material for synthesis of porous silicon via combining mechanical ball milling with magnesiothermic reduction method, employing NaCl as a heat scavenger. The resulting silicon maintains the porous structure of diatomite, with large specific surface area of 288.5 m(2) g(-1) and average pore size of 9.6 nm. The C@pSi-I composite delivers improved cycling stability and good rate capability. A discharge capacity of 1116.7 mA h g(-1) at current density of 200 mA g(-1) is achieved after 200 cycles, which will be beneficial to the scalable synthesis of porous silicon materials for the next generation lithium-ion batteries.

• 出版日期2018-3-30
• 单位山东理工大学; 山东大学; 哈尔滨工业大学