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Directional High-Value Regeneration of Lithium, Iron, and Phosphorus from Spent Lithium Iron Phosphate Batteries
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2022-09-27 , DOI: 10.1021/acssuschemeng.2c03997 Jia-feng Zhang 1 , Wenyang Hu 1 , Jingtian Zou 1 , Xiaowei Wang 1 , Pengfei Li 1 , Dezhao Peng 1 , Yong Li 2 , Ruirui Zhao 3 , Di He 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2022-09-27 , DOI: 10.1021/acssuschemeng.2c03997 Jia-feng Zhang 1 , Wenyang Hu 1 , Jingtian Zou 1 , Xiaowei Wang 1 , Pengfei Li 1 , Dezhao Peng 1 , Yong Li 2 , Ruirui Zhao 3 , Di He 2
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As lithium-ion batteries (LIBs) are undergoing unprecedented development in electric vehicles (EVs) and renewable grids, recycling spent battery disposal is becoming the dominating issue considering the urgent demand for sustainable resources and eco-friendly development. However, existing recovery methods for spent LIBs still suffer from complex processes and low processing efficiency. Herein, an effective pyroprocessing-based strategy was proposed to recycle spent lithium iron phosphate (LFP) materials, featuring full element regeneration and conversion of high-value products. Specifically, over 99% Li was extracted and converted into high purity lithium carbonate (>99%), while Fe and P were further converted into value-added Fe2P2O7 and Na4P2O7, respectively. Due to the benefits of high efficiency of metal extraction and the reuse of all valuable elements, the pyroprocessing-based strategy potentially generates the profit of 1.44 $ kg–1 of LFP batteries, over three times more than that of the conventional hydrometallurgical process, while the discharges of wastewater and residue are reduced by 66.3 and 93.9%, respectively. This study provides a new pyroprocessing-based approach to the green recovery of all elements of LFP materials in spent LFP batteries.
中文翻译：
废旧磷酸铁锂电池中锂、铁和磷的定向高价值再生
随着锂离子电池 (LIB) 在电动汽车 (EV) 和可再生电网方面的空前发展，考虑到对可持续资源和生态友好型发展的迫切需求，废旧电池的回收处理正成为主要问题。然而，现有的废锂离子电池回收方法仍存在工艺复杂、处理效率低的问题。在此，提出了一种有效的基于高温处理的策略来回收废磷酸铁锂 (LFP) 材料，其特点是全元素再生和高价值产品的转化。具体而言，超过 99% 的 Li 被提取并转化为高纯度碳酸锂（>99%），而 Fe 和 P 进一步转化为增值的 Fe 2 P 2 O 7和 Na 4P 2 O 7，分别。由于金属提取的高效率和所有有价值元素的再利用的好处，基于高温处理的策略可能会产生 1.44 $ kg –1的 LFP 电池的利润，是传统湿法冶金工艺的三倍以上，而废水和废渣排放量分别减少66.3%和93.9%。本研究为废旧 LFP 电池中 LFP 材料的所有元素的绿色回收提供了一种新的基于高温处理的方法。
更新日期：2022-09-27
中文翻译：
废旧磷酸铁锂电池中锂、铁和磷的定向高价值再生
随着锂离子电池 (LIB) 在电动汽车 (EV) 和可再生电网方面的空前发展，考虑到对可持续资源和生态友好型发展的迫切需求，废旧电池的回收处理正成为主要问题。然而，现有的废锂离子电池回收方法仍存在工艺复杂、处理效率低的问题。在此，提出了一种有效的基于高温处理的策略来回收废磷酸铁锂 (LFP) 材料，其特点是全元素再生和高价值产品的转化。具体而言，超过 99% 的 Li 被提取并转化为高纯度碳酸锂（>99%），而 Fe 和 P 进一步转化为增值的 Fe 2 P 2 O 7和 Na 4P 2 O 7，分别。由于金属提取的高效率和所有有价值元素的再利用的好处，基于高温处理的策略可能会产生 1.44 $ kg –1的 LFP 电池的利润，是传统湿法冶金工艺的三倍以上，而废水和废渣排放量分别减少66.3%和93.9%。本研究为废旧 LFP 电池中 LFP 材料的所有元素的绿色回收提供了一种新的基于高温处理的方法。
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