Catalyst-free formation of silicon nanowires and their application as anodes of lithium ion batteries

在没有添加金属催化剂的情况下，使用硅、二氧化硅及其混合物的靶材进行了激光汽化。从对激光蒸发产物的分析中发现，顶端有硅纳米颗粒的非晶态氧化硅纳米线是从硅和混合靶材中生长出来的。我们提出了一种新的无金属催化剂作用的生长机制。我们还评估了纳米线作为下一代锂离子电池的负极材料。纳米线显示出良好的充放电容量。

Laser vaporization was performed using targets of silicon, silicon dioxide, and their mixture without the addition of metal catalysts. From the analysis of the laser-vaporization products, amorphous silicon oxide nanowires having silicon nanoparticles at their tips were found to be grown form silicon and mixed targets. We proposed a novel growth mechanism without the contribution of metal catalysts. We also evaluated the nanowires as an anode material of a next-generation lithium ion battery. The nanowires showed a promising high charge-discharge capacity.