Fluidized bed reaction towards crystalline embedded amorphous Si anode with much enhanced cycling stability.
Fluidized bed reaction towards crystalline embedded amorphous Si anode with much enhanced cycling stability.
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DOI：
10.1039/c8cc00575c
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发表时间：
2018-04
影响因子：
4.9
通讯作者：
Yu Zhou;Huajun Guo;Guochun Yan;Zhixing Wang;Xinhai Li;Zhewei Yang;Anxiong Zheng;Jiexi Wang
中科院分区：
文献类型：
--
作者：
Yu Zhou;Huajun Guo;Guochun Yan;Zhixing Wang;Xinhai Li;Zhewei Yang;Anxiong Zheng;Jiexi Wang
首次采用一种简便、规模化的流化床反应路线制备了平均粒径为50 nm的晶态镶嵌非晶硅纳米颗粒作为锂离子电池负极材料。通过提高操作电位来控制电化学活性程度，所得样品显示出优异的循环稳定性，在0.12-2.00 V的电压范围内以1 A g-1循环200次后具有94.7%的高容量保持率。
A facile and large-scale fluidized bed reaction route was introduced for the first time to prepare crystalline embedded amorphous silicon nanoparticles with an average size of 50 nm as anode materials for lithium-ion batteries. By increasing the operating potential to control the electrochemically active degree, the resulting sample showed excellent cycle stability with a high capacity retention of 94.7% after 200 cycles at 1 A g-1 in the voltage range of 0.12-2.00 V.