未注液磷酸铁锂正极废料修复再利用性能研究

Study on the recovery and reuse of uninjected LiFePO4 cathode materials

采用物理法回收了未注液磷酸铁锂电池正极材料。采用XRD、SEM、循环伏安、电化学阻抗图谱、恒流充放电测试研究了材料的晶体结构、微观形貌和电化学性能。结果表明:回收的材料具有良好的电化学性能,可以满足锂离子电池使用。

The positive electrode material of unused lithium iron phosphate battery was recovered by physical method.The crystal structure, microstructure and electrochemical properties of the material were studied by XRD,SEM,cyclic voltammetry, electrochemical impedance spectroscopy, and constant current charge-discharge tests.The results show that the recovered materials have good electrochemical properties and can be used in lithium-ion batteries.