Superior Lithium Electroactive Mesoporous Si@Carbon Core-Shell Nanowires for Lithium Battery Anode Material

被引:464
|
作者
Kim, Hyesun [1 ]
Cho, Jaephil [1 ]
机构
[1] Hanyang Univ, Dept Appl Chem, Ansan 426791, South Korea
关键词
D O I
10.1021/nl801853x
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Mesoporous Si@carbon core-shell nanowires with a diameter of similar to 6.5 nm were prepared for a lithium battery anode material using a SBA-15 template. As-synthesized nanowires demonstrated excellent first charge capacity of 3163 mA h/g with a Coulombic efficiency of 86% at a rate of 0.2 C (600 mA/g) between 1.5 and 0 V in coin-type half-cells. Moreover, the capacity retention after 80 cycles was 87% and the rate capability at 2 C (6000 mA/g) was 78% the capacity at 0.2 C.
引用
收藏
页码:3688 / 3691
页数:4
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