阳极
法拉第效率
材料科学
电解质
纳米孔
纳米技术
铋
电池(电)
储能
化学工程
纳米结构
电极
化学
冶金
工程类
物理
物理化学
功率(物理)
量子力学
作者
Yuyan Shao,Meng Gu,Xin Li,Zimin Nie,Pengjian Zuo,Guosheng Li,Tianbiao L. Liu,Jie Xiao,Yingwen Cheng,Chong M. Wang,Ji‐Guang Zhang,Jun Li
出处
期刊:Nano Letters
[American Chemical Society]
日期:2013-12-09
卷期号:14 (1): 255-260
被引量:254
摘要
Rechargeable magnesium batteries have attracted wide attention for energy storage. Currently, most studies focus on Mg metal as the anode, but this approach is still limited by the properties of the electrolyte and poor control of the Mg plating/stripping processes. This paper reports the synthesis and application of Bi nanotubes as a high-performance anode material for rechargeable Mg ion batteries. The nanostructured Bi anode delivers a high reversible specific capacity (350 mAh/gBi or 3430 mAh/cm(3)Bi), excellent stability, and high Coulombic efficiency (95% initial and very close to 100% afterward). The good performance is attributed to the unique properties of in situ formed, interconnected nanoporous bismuth. Such nanostructures can effectively accommodate the large volume change without losing electric contact and significantly reduce diffusion length for Mg(2+). Significantly, the nanostructured Bi anode can be used with conventional electrolytes which will open new opportunities to study Mg ion battery chemistry and further improve its properties.
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