材料科学
阳极
纳米线电池
制作
锂(药物)
储能
可扩展性
锂电池
锂离子电池
电池(电)
纳米尺度
纳米技术
硅
电极
光电子学
计算机科学
功率(物理)
离子
磷酸钒锂电池
化学
离子键合
医学
替代医学
有机化学
物理化学
病理
内分泌学
物理
量子力学
数据库
作者
Bin Wang,Xianglong Li,Tengfei Qiu,Bin Luo,Jing Ning,Jing Li,Xianfeng Zhang,Minghui Liang,Linjie Zhi
出处
期刊:Nano Letters
[American Chemical Society]
日期:2013-10-30
卷期号:13 (11): 5578-5584
被引量:168
摘要
The nanostructuring of silicon (Si) has recently received great attention, as it holds potential to deal with the dramatic volume change of Si and thus improve lithium storage performance. Unfortunately, such transformative materials design principle has generally been plagued by the relatively low tap density of Si and hence mediocre volumetric capacity (and also volumetric energy density) of the battery. Here, we propose and demonstrate an electrode consisting of a textured silicon@graphitic carbon nanowire array. Such a unique electrode structure is designed based on a nanoscale system engineering strategy. The resultant electrode prototype exhibits unprecedented lithium storage performance, especially in terms of volumetric capacity, without the expense of compromising other components of the battery. The fabrication method is simple and scalable, providing new avenues for the rational engineering of Si-based electrodes simultaneously at the individual materials unit scale and the materials ensemble scale.
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