期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：4
页码：1-8
DOI：10.1088/1755-1315/300/4/042123
出版社：IOP Publishing
摘要：In order to overcome the disadvantages of foam copper, template method and dealloy method in processing porous current collectors for lithium ion batteries, a new method of processing porous current collectors by nanosecond laser is proposed. Microporous fabrication experiment was carried out on the electrodeposited copper foil.The effects of laser repetition frequency and processing speed on the entry diameter, exit diameter, taper and roundness of the micropores were investigated. It is found that the laser repetition frequency has a significant influence on the entry diameter and exit diameter of micropores, but has little effect on the taper and the roundness. Furthermore, it is concluded that high processing speed leads to large roundness but small taper of the micropores. In addition, the variation trend of the entry diameter and exit diameter is complex because of the plasma shielding effect.
