【摘要】 以废旧LiCoO₂电池为原料,通过预处理、酸浸、共沉淀步骤,实现了LiNi_0.8Co_0.1Mn_0.1O₂正极材料的再生。ICP-OES分析浸出液中的元素含量,SEM和XRD表征材料形貌和结构,扣式电池的电化学测试定量分析材料的电化学性能。研究表明,利用浸出液可以再生与空白形貌相似和层状结构良好的正极材料（R-NCM）,（R-NCM）在0.2C、2.8～4.3V电压范围内进行充放电循环测试,首周放电比容量可达到210.8mAh/g,经过50周充放电循环后放电比容量仍有183 mAh/g,容量保持率为87%,表现出良好的循环稳定性,为废旧锂离子电池的再生提供支撑并指出发展方向。更多还原

【Abstract】 LiNi_0.8Co_0.1Mn_0.1O₂ cathode material was re-synthesized from discard LiCoO₂ batteries by pre-treatment, acid leaching and co-precipitation.The concentration of metal ion in leachate was analyzed by ICP-OES, the morphology and structure of cathode materials were characterized by the SEM and XRD, and the electrochemical properties of coin batteries were performed by the electrochemical tests. The results show that the regenerated material（R-NCM） from acid leaching lixivium exhibits the desired morphology and well layer structure. Under the condition of 2.8～4.3 V, the initial discharge capacity of R-NCM is 210.8 m Ah/g at 0.2 C. After 50 cycles, the discharge capacity and capacity retention of re-synthesized cathode material are 183 mAh/g, 87%, respectively, showing good cycle performance, providing support and development direction for the regeneration of used lithium-ion batteries.更多还原