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Optimized Li and Fe recovery from spent lithium-ion batteries via a solution-precipitation method

机译：通过溶液沉淀法从废锂离子电池中优化Li和Fe回收

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A new process is optimized and presented for the recovery and regeneration of LiFePO _(4) from spent lithium-ion batteries (LIBs). The recycling process reduces the cost and secondary pollution caused by complicated separation and purification processes in spent LIB recycling. Amorphous FePO _(4) ·2H _(2) O was recovered by a dissolution-precipitation method from spent LiFePO _(4) batteries. The effects of different surfactants ( i.e. CTAB, SDS and PEG), which were added to the solution on the recovered FePO _(4) ·2H _(2) O, were investigated. Li _(2) CO _(3) was precipitated by adding Na _(2) CO _(3) to the filtrate. Then the LiFePO _(4) /C material was synthesized by a carbon thermal reduction method using recycled FePO _(4) ·2H _(2) O and Li _(2) CO _(3) as the Fe, P, and Li sources. The as-prepared LiFePO _(4) /C shows comparable electrochemical performance to that of commercial equivalents.
机译：优化新方法，并呈现来自废锂离子电池（LIBS）的LiFePo _（4）的恢复和再生。回收过程降低了在废借回收中的复杂分离和纯化过程引起的成本和二次污染。通过废除LiFePO _（4）电池的溶出 - 降水方法回收非晶性FEPO_（4）·2H _（2）o。研究了不同表面活性剂（即CTAB，SDS和PEG）的效果，将其加入回收的FEPO _（4）·2H_（2）O上的溶液中。通过将Na _（2）CO _（3）加入滤液，沉淀Li _（2）CO _（3）。然后通过使用再循环的FEPO _（4）·2H_（2）O和Li _（2）Co _（3）作为Fe，P和Li _（2）Co _（3）来合成LiFePO _（4）/ C材料。李来源。 AS制备的LiFePO _（4）/ c显示了商业等同物的相当电化学性能。

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