Preparation of LiNi1/3Co1/3Mn1/3O2 cathode materials from spent Li-ion batteries

摘要：

A recycling process including separation of electrode materials by ultrasonic treatment,acid leaching,Fe-removing,precipitation of cobalt,nickel,manganese and lithium has been applied successfully to recycle spent lithium-ion batteries and to synthesize LiNi1/3Co1/3Mn1/3O2.When ultrasonic treatment with 2-nitroso-4-methylphenol(NMP) at 40 ℃ for 15 min,the electrode materials are separated completely.Above 99％ of Co,Ni,Mn and Li,95％ of Fe in the separated electrodes are acid-leached in the optimized conditions of 2 mol/L H2SO4,1.2 H2O2.H2SO4 (molar ratio),70 ,1 ℃ .10 initial S.L ratio,and 1 h.99.5％ of Fe and less than 1％ of Co,Ni,Mn in the leaching solution can be removed in the conditions of initial pH value 2.0.2.5 adjusted by adding 18％ Na2CO3,90 ℃ and stirring time 3 h.After adjusted to be equal by adding NiSO4,CoSO4 and MnSO4 solution,97.1％ of Ni,Co,Mn in the Fe-removing surplus leaching solution can be recovered as Ni1/3Co1/3Mn1/3(OH)2.94.5％ of Li in the surplus filtrate after the deposition of Co,Ni and Mn can be recovered as Li2CO3.The LiNi1/3Co1/3Mn1/3O2,prepared from the recovered compounds,is found to have good characteristics of the layered structure and elecrtochemical performance.

关键词： recycling process spent Li-ion batteries cathode material LiNi1/3Co1/3Mn1/3O2

作者: LI Jian-gang ZHANG Qian HE Xiang-ming

作者单位: School of Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing100084,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）