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Efficient regeneration of waste LiNi0.5Co0.2Mn0.3O2 cathode toward high-performance Li-ion battery
Author NameAffiliationE-mail
ZHU Hengyi Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
JU Liyun Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
ZHANG Haoyue Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
DU Jiaxin Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
XIE Yutong Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
SONG Li Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
JIN Yachao Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China  
ZHANG Mingdao Jiangsu Innovation Platform of Lithium Composite-Materials for Battery R&D, Institute of Energy Supply Technology or High-end Equipment, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China matchlessjimmy@163.com 
Abstract: An efficient interlocking process was developed, including acid leaching, co-precipitation, and heat treatment, to regenerate waste LiNi0.5Co0.2Mn0.3O2 (NCM523) materials. DL-tartaric acid and formic acid were used as leaching systems, and the leaching efficiencies of Li, Ni, Co, and Mn reached about 98%. The leaching solution was added to the oxalic acid solution for a co-precipitation reaction, and then the regeneration of the material was realized through heat treatment. The regenerated NCM523 material exhibited an excellent layered structure and uniform elemental distribution. When employed as a cathode material for LIBs, the regenerated NCM523 exhibited a discharge-specific capacity of 168.5 mAh·g-1 at 0.1C (18 mA·g-1), which is comparable to the performance of fresh NCM523. Furthermore, the regenerated NCM523 demonstrated a capacity retention of 93.09% after 100 cycles at 0.5C.
Keywords: Li-ion battery  regeneration  leaching  co-precipitation  heat treatment
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ZHU Hengyi,JU Liyun,ZHANG Haoyue,DU Jiaxin,XIE Yutong,SONG Li,JIN Yachao,ZHANG Mingdao.Efficient regeneration of waste LiNi0.5Co0.2Mn0.3O2 cathode toward high-performance Li-ion battery[J].Chinese Journal of Inorganic Chemistry,2025,41(4):625-638.
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Chinese Journal of Inorganic Chemistry