研究目的
Investigating the generation of silicon nano?ber clusters from silicon sludge by millisecond pulsed laser irradiation for potential use in high-performance lithium-ion battery electrodes.
研究成果
Millisecond pulsed laser irradiation can effectively generate silicon nano?ber clusters from silicon grinding sludge, with the size and morphology of the nano?bers controllable by adjusting the laser pulse width and gas pressure. Preheating the sludge affects the crystallinity and oxidation degree of the nano?bers. This method offers a cost-effective way to produce silicon nanomaterials for potential use in lithium-ion batteries.
研究不足
The study focuses on the generation of silicon nano?ber clusters from silicon sludge but does not extensively explore their application in lithium-ion batteries or the scalability of the method.
1：Experimental Design and Method Selection:
Millisecond pulsed laser irradiation was performed on silicon grinding sludge to generate silicon nano?ber clusters. The effect of gas pressure, laser pulse width, and sludge preheating on the nanomaterials was investigated.
2：Sample Selection and Data Sources:
Silicon sludge from the back-grinding process of silicon wafers was used. The sludge was press molded into cylinders for laser irradiation.
3：List of Experimental Equipment and Materials:
A quasi-CW ?ber laser with a wavelength of 1070 nm and a peak power of 500 W was used. The generated nanomaterials were characterized using SEM, TEM, and Raman spectroscopy.
4：Experimental Procedures and Operational Workflow:
Laser irradiation was performed under a single-shot mode with varying pulse widths and gas pressures. The nanomaterials were backward transferred onto a glass substrate for analysis.
5：Data Analysis Methods:
The size and morphology of the nanomaterials were analyzed using SEM and TEM. Raman spectroscopy was used to study the crystallinity and oxidation degree.
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