Cathode electrolysis for the comprehensive recycling of spent lithium-ion batteries

被引：16
|
作者：
Zhao, Jingjing [1 ]
Qu, Jiakang [1 ]
Qu, Xin [1 ]
Gao, Shuaibo [1 ]
Wang, Dihua [1 ,2 ,3 ]
Yin, Huayi [1 ,2 ,3 ]
机构：
[1] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China
[2] Joint Ctr Green Mfg Energy Storage Mat Wuhan Univ, Wuhan 430072, Peoples R China
[3] Wuhan Univ, Int Cooperat Base Sustainable Utilizat Resources, Wuhan 430072, Peoples R China
来源：
GREEN CHEMISTRY | 2022年 / 24卷 / 16期
关键词：
VALUABLE METALS; SELECTIVE EXTRACTION; RECOVERY; COBALT; LI; SEPARATION; CARBONATE; OXALATE; CO;
D O I：
10.1039/d2gc02118h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Clean lithium-ion battery recycling is indispensable to make the battery market sustainable. Here, we develop an electrochemical approach to separate the cathode film (6 cm x 20 cm) from the Al substrate and simultaneously leach Li and transition metals from the cathode film in 0.5 M H2SO4, leaving behind the conductive carbon and polyvinylidene fluoride binder that are reusable. For LiCoO2 batteries, LiCoO2 was converted to soluble Li+ and Co2+ with a leaching efficiency of over 97%. Besides, the cathode electrolysis is applicable to treat LiMn2O4 and LiNi0.5Co0.2Mn0.3O2. Overall, the cathode electrolysis employs electrons as both reducing agents and exfoliation force, offering a promising pathway to comprehensively reclaim all components from spent cathodes with limited secondary wastes and energy consumption.
引用
收藏
页码：6179 / 6188
页数：10
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