Invited) Fabrication and Characterization of Silicon Microwire Anodes by Electrochemical Etching Techniques
Invited) Fabrication and Characterization of Silicon Microwire Anodes by Electrochemical Etching Techniques
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特邀）电化学刻蚀技术硅微丝阳极的制备与表征
DOI：
10.1149/06606.0027ecst
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
H. Föll
中科院分区：
文献类型：
--
作者：
S. Nöhren;E. Quiroga-Gonzalez;J. Carstensen;H. Föll
利用主要允许基于电化学蚀刻的大规模生产的技术，生产用于Li离子电池阳极的硅微丝。硅线表现出高的循环稳定性，具有大量的活性材料，由于在每条线周围形成均匀的固体电解质界面，该活性材料在循环期间不会退化。这项研究总结了（准确的）电池工作参数的重要性，并显示了不同的导线尺寸对电池性能和循环稳定性的影响。此外，它还比较了可以包含电线的两种阳极变体。FFT阻抗分析显示了特定条件下的特性电阻变化，这些特性电阻直接与操作期间导线中的过程相关，有助于其优化。
With a technique principally allowing for large scale production based on electrochemical etching, silicon microwires for Li ion battery anodes are produced. Silicon wires exhibit high cycling stability with high amount of active material which does not degenerate over the cycling period due to the formation of a homogeneous solid electrolyte interface around each wire. This study summarizes the importance of the (exact) battery work parameters and shows the influence of different wire dimensions on the battery performance and cycling stability. Furthermore, it compares two anode variations in which the wires can be incorporated. FFT-impedance analysis shows the characteristic resistance changes under specific conditions, which relate directly to the processes in the wires during operation, what helps for their optimization.