In recent years, lithium iron phosphate (LFP) batteries in electric vehicles have significantly increased concerns over potential environmental threats. Besides reducing environmental pollution, recycling valuable materials is crucial for resource utilization. This study summarized the latest LFP recovery technologies, including pyrometallurgy, hydrometallurgy, bioleaching, and direct regeneration. The topics covered are the structure of LFPs, the recovery routes using various leaching agents, and the evaluation of effective separation procedures and their progress. We also discuss future challenges and opportunities associated with recycling LFP cathodes. This review will aid in gaining a better understanding of the development of sustainable methods for recycling Li-ion batteries.

中文翻译：

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废旧磷酸铁锂（LFP）电池的处理

近年来，电动汽车中的磷酸铁锂（LFP）电池显着增加了人们对潜在环境威胁的担忧。除了减少环境污染外，回收有价值的材料对于资源利用也至关重要。本研究总结了最新的磷酸铁锂回收技术，包括火法冶金、湿法冶金、生物浸出和直接再生。涵盖的主题包括 LFP 的结构、使用各种浸出剂的回收路线以及有效分离程序及其进展的评估。我们还讨论了与回收 LFP 阴极相关的未来挑战和机遇。本次审查将有助于更好地了解锂离子电池回收可持续方法的开发。