【摘要】 通过直接热处理以及补充锂元素二次烧结的方法对锂离子电池三元镍钴锰废料进行回收,并将其重新作为锂离子电池正极材料进行应用。采用扫描电镜、红外光谱、热重、电感耦合等离子体以及电化学测试等方法对材料性能进行检测。结果表明:温度高于700℃时可以有效去除报废材料中的PVDF,高温烧结可以一定程度上修复材料容量,而通过补充锂元素进行二次烧结的方法可以有效恢复废料性能,具有商业应用价值。此方法工艺简单,可以为锂离子电池正极层状材料的回收提供参考。更多还原

【Abstract】 The scrapsLiNi_0.5Co_0.2Mn_0.3O₂ were recycled by direct sintering and adding lithium sources to reuse as cathode materials for lithium ion batteries. The performance of the materials was investigated by scanning electron microscopy（SEM）, Fourier transform infrared spectroscopy（FTIR）, inductively coupled plasma（ICP） and electrochemical methods. The results show that the PVDF can be removed effectively when the sintering temperature is higher than 700 ℃, and sintering can recover the material performance to some degree. Sintering with Li₂CO₃ can effectively recover the performance of the scraps, which possess high commercial application potentials. This method can provide a significant reference for recycling the layered cathode materials.更多还原