Regeneration of waste LiCoO2 cathode materials with high energy stripping of laser

doi:10.1016/j.jelechem.2022.116100

	Regeneration of waste LiCoO2 cathode materials with high energy stripping of laser
	Gao, Hongfu 3; Zhang, Yue 2; Meng, Yanshuang 1,3; Liu, Xingzhong 3; Zhu, Fuliang 1,3
刊名	Journal of Electroanalytical Chemistry
	2022-03-01
卷号	908
关键词	Chemical analysis Cobalt compounds Electric discharges Lithium compounds Stability Cathode Current-collector Electrochemical performance Element compositions Energy First discharge Laser stripping Regeneration Surface chemical state Waste LiCoO2
ISSN号	1572-6657
DOI	10.1016/j.jelechem.2022.116100
英文摘要	To regenerate waste LiCoO2, laser was used to strip LiCoO2 from the current collector. The surface chemical state and element composition of the laser stripped LiCoO2 material were analyzed. The regenerated laser-stripped LiCoO2 was used to fabricate the cathode of batteries and the electrochemical performance was tested. The test results show that the first discharge specific capacity of the regenerated LiCoO2 is 164.6 mAh g−1 at 25 mA g−1, and capacity remains 120 mAh g−1 after 100 cycles. At high current density of 1250 mA g−1, its capacity can be stabilized at 97.2 mAh g−1. The excellent electrochemical performance can be attributed to the high energy of the laser which can directly decompose and volatilize PVDF and C, thereby effectively improves the purity of LiCoO2. Moreover, the laser could effectively decompose LixCoO2 to Li1CoO2 and Co3O4 by heating, which facilitates the reaction of Co3O4 with Li2CO3 to form LiCoO2 during the process of replenishing lithium, therefore, improves the structural stability and dynamic performance of the regenerated LiCoO2. © 2022 Elsevier B.V.
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000767857500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157890]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou; 730050, China 2.Department of Manufacturing Engineering, Georgia Southern University, Statesboro; GA; 30458, United States; 3.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Gao, Hongfu,Zhang, Yue,Meng, Yanshuang,et al. Regeneration of waste LiCoO2 cathode materials with high energy stripping of laser[J]. Journal of Electroanalytical Chemistry,2022,908.
APA	Gao, Hongfu,Zhang, Yue,Meng, Yanshuang,Liu, Xingzhong,&Zhu, Fuliang.(2022).Regeneration of waste LiCoO2 cathode materials with high energy stripping of laser.Journal of Electroanalytical Chemistry,908.
MLA	Gao, Hongfu,et al."Regeneration of waste LiCoO2 cathode materials with high energy stripping of laser".Journal of Electroanalytical Chemistry 908(2022).