热解炭
阳极
材料科学
复合数
硅
石墨
锂(药物)
碳纤维
锂离子电池
电池(电)
化学工程
复合材料
离子
电化学
法拉第效率
电解质
集电器
电极
阴极
热解
冶金
化学
物理化学
功率(物理)
内分泌学
工程类
物理
医学
量子力学
作者
Huihua Zhang,Xinhai Li,Huajun Guo,Zhixing Wang,Yu Zhou
标识
DOI:10.1016/j.powtec.2016.05.002
摘要
A modified Stöber/Mg-thermal reduction combination method was utilized to fabricate hollow silicon. Hollow silicon/graphite/pyrolytic carbon (H-Si/C) composite was prepared by using the as-obtained hollow silicon, graphite and phenolic resin as raw materials. The hollow structure and pyrolytic carbon accommodates the large volumetric change of silicon during cycle process. As an anode material, the obtained composite shows excellent performance. Under current density of 100 mA g− 1, the H-Si/C composite exhibits an initial capacity of 470 mAh g− 1, with an initial coulombic efficiency of 71.4%, the charge capacity after 50 cycles of the composite can remain as high as 554 mAh g− 1, and the reversible specific capacity has little decay in last 25 cycles. The H-Si/C composite carbon composite could be used as a promising anode material for lithium ion batteries.
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