【摘要】 对废旧LiFePO₄电池循环利用的可行性进行了研究。结果表明:通过放电、拆解、破碎、分选、浸泡、正极分离的回收工艺流程,对汽车用LiFePO₄电池中的组分材料进行分类回收,可达到较高的资源回收率;废旧LiFePO₄电池正极在80℃下浸泡4 h,可实现铝箔与正极材料混合物完全分离;烧结温度为700℃时所得再生产物在结晶度、首次充放电、循环性能、电荷传递电阻等方面表现优异;采用本实验所述方法能对废旧LiFePO₄电池中的正极材料进行有效回收,并且再生制作的LiFePO₄电池的电化学性能良好,有效地实现了废旧LiFePO₄电池的循环利用。更多还原

【Abstract】 The feasibility of recycling utilization of waste LiFePO₄ battery was studied. The results showed that the component materials in the automobile LiFePO₄ battery can be classified and recovered to achieve a high resource recovery rate through the recovery process of discharge, disassembly, crushing, sorting, soaking and positive pole separation. When the anode of waste LiFePO₄ battery was immersed at 80 ℃ for 4 h, the aluminum foil and anode materials can be completely separated. The regenerated products obtained at the sintering temperature of 700 ℃ exhibited excellent performance in crystallinity, first charge and discharge, cycle performance, charge transfer resistance, etc. The anode materials in the waste LiFePO₄ battery can be effectively recycled by using the method described in this experiment, and the regenerated LiFePO₄ battery possessed good electrochemical properties, thus realizing the recycling utilization of waste LiFePO₄ battery.更多还原