Preparation of Cathode Materials by Spray Drying from Leaching Solution of Spent lithium-ion Batteries Materials

• Published in: International journal of electrochemical science Vol. 16; no. 3; p. 210372
• Main Authors: Fei, Zitong, Meng, Qi, Dong, Peng, Zhang, Yingjie, Li, Qingxiang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2021
• Subjects: leaching solution; LiNi0.6Co0.2Mn0.2O2 materials; spent lithium-ion batteries; Spray drying; Spray drying; LiNi0.6Co0.2Mn0.2O2 materials; spent lithium-ion batteries; leaching solution
• ISSN: 1452-3981; 1452-3981
• DOI: 10.20964/2021.03.17

Recycling of spent lithium-ion batteries is beneficial for resources recovery and environment protection. To solve the long and complex process of the existing recovery process, herein the precursor of LiNi0.6Co0.2Mn0.2O2 was prepared directly from the leaching solution and then used for regeneration of the LiNi0.6Co0.2Mn0.2O2 materials. Based on the ratio of n (Li): n (Ni): n (Co): n (Mn) =2: 0.6: 0.2: 0.2, the precursor was directly prepared by spray drying with the needed acetate adding into the leaching solution. Based on TG-DSC analysis, the LiNi0.6Co0.2Mn0.2O2 materials was prepared by calcination at 450 °C for 5 h and secondary calcination at 850 ° C for 12 h. Finally, the regenerated LiNi0.6Co0.2Mn0.2O2 materials has good electrochemical reversibility and excellent rate performance.