Size-dependent cyclic voltammetry study of silicon microwire anodes for lithium ion batteries
Size-dependent cyclic voltammetry study of silicon microwire anodes for lithium ion batteries
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DOI：
10.1016/j.electacta.2016.09.088
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发表时间：
2016-11-01
影响因子：
6.6
通讯作者：
Foell, Helmut
中科院分区：
文献类型：
--
作者：
Hansen, Sandra;Quiroga-Gonzalez, Enrique;Foell, Helmut
作为锂离子电池的阳极的硅微丝可以作为锂离子电池的阳极在100次循环中显示出良好的循环性能，而没有显著的容量损失。然而，阳极的寿命在很大程度上取决于电池的充电方式。充电过度或充电不足可能会产生严重的负面后果。本文研究了硅微丝阳极的工作电压范围及其与丝尺寸的关系。循环伏安法用于确定不同的锂化/脱锂事件的电位，而修改的循环伏安法技术用于研究这些过程的动力学。专门制备的阳极与不同长度和宽度的硅线用于研究。(C)2016爱思唯尔有限公司版权所有
Silicon microwires as anodes for Li-ion batteries may show good cycling performance over 100 cycles as anodes for Lithium ion batteries without significant capacity losses. The life time of the anode, however, strongly depends on the way the battery is charged. Overcharging or undercharging may have severe negative consequences. This paper studies with the study of the operational voltage range of Si microwire anodes and its dependence on the dimensions of the wires. Cyclic voltammetry is used to identify the potentials for the different lithiation/delithiation events, while a modified cyclic voltammetry technique is used to study the dynamics of those processes. Specially prepared anodes with Si wires of different lengths and widths were used for the study. (C) 2016 Elsevier Ltd. All rights reserved.