A green process for exfoliating electrode materials and simultaneously extracting electrolyte from spent lithium-ion batteries

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	A green process for exfoliating electrode materials and simultaneously extracting electrolyte from spent lithium-ion batteries
	He, Kai ; Zhang, Zhi-Yuan ; Alai, Lagu ; Zhang, Fu-Shen
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2019-08-05
卷号	375 页码:43-51
关键词	Spent Li-ion battery recycling Cathode adhesion Electrode material separation Electrolyte recovery
ISSN号	0304-3894
英文摘要	Recycling of spent lithium-ion batteries (LIBs) has aroused extensive attentions with the expanding demand of electric vehicles. Two considerable challenges of LIBs recycling were separating electrode materials from metallic foils and reclaiming hazardous electrolyte. In the current study, an environmentally benign process was developed to recovery electrode materials and hazardous electrolyte. The main merits were that no strong acid or alkali was applied in the process, and the electrode materials were reclaimed in flaky form. A special complex aqueous peeling agent, namely exfoliating and extracting solution (AEES) was manufactured and applied in the process. The results indicated that cathode material could be exfoliated from Al foil by weakening the mechanical interlocking force and Coulomb force between cathode materials and foils. Ethylene carbonate (EC) and propylene carbonate (PC) could be extracted from electrodes and separators and recovered via distillation. LiPF6 could be precipitated from EC and PC and recovered via filtration. The conditions could be precisely controlled by optimizing the concentration of AEES. The recovery efficiencies of electrolyte, Al foil, Cu foil and electrode materials were 95.6%, 99.0%, 100% and near 100%, respectively. The process efficiently avoided infiltration of impurities into the electrode materials and is environmentally friendly for industrial application.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43165]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Dept Solid Waste Treatment & Recycling, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	He, Kai,Zhang, Zhi-Yuan,Alai, Lagu,et al. A green process for exfoliating electrode materials and simultaneously extracting electrolyte from spent lithium-ion batteries[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,375:43-51.
APA	He, Kai,Zhang, Zhi-Yuan,Alai, Lagu,&Zhang, Fu-Shen.(2019).A green process for exfoliating electrode materials and simultaneously extracting electrolyte from spent lithium-ion batteries.JOURNAL OF HAZARDOUS MATERIALS,375,43-51.
MLA	He, Kai,et al."A green process for exfoliating electrode materials and simultaneously extracting electrolyte from spent lithium-ion batteries".JOURNAL OF HAZARDOUS MATERIALS 375(2019):43-51.