Efficient Direct Recycling of Lithium-Ion Battery Cathodes by Targeted Healing
Efficient Direct Recycling of Lithium-Ion Battery Cathodes by Targeted Healing
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DOI：
10.1016/j.joule.2020.10.008
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发表时间：
2020-11
期刊：
影响因子：
39.8
通讯作者：
Panpan Xu;Q. Dai;Hongpeng Gao;Haodong Liu;Minghao Zhang;Mingqian Li;Yan Chen;K. An;Y. Meng;Ping Liu;Yanran Li;J. Spangenberger;L. Gaines;Jun Lu;Zhengu Chen
中科院分区：
文献类型：
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作者：
Panpan Xu;Q. Dai;Hongpeng Gao;Haodong Liu;Minghao Zhang;Mingqian Li;Yan Chen;K. An;Y. Meng;Ping Liu;Yanran Li;J. Spangenberger;L. Gaines;Jun Lu;Zhengu Chen
废旧锂离子电池的回收利用是解决其环境和全球可持续性问题的迫切需要。在这里，我们报告了一种高效的、环境友好的基于缺损靶向修复的Lib再生方法，它代表了一种范式转变的Lib回收策略。特别是，通过结合低温水溶液再硫化和快速后退火，我们成功地实现了废LiFePO4(LFP)阴极的直接再生，LiFePO4(LFP)阴极是电动汽车和栅极存储应用的重要材料之一。我们展示了在不同的降解条件下，LFP的组成、结构和电化学性能恢复到与原始LFP相同的水平。对不同LiB回收工艺的生命周期分析表明，这种针对缺陷的直接回收方法可以显著减少能源消耗和温室气体(GHG)排放，与目前的湿法和火法相比，具有更大的经济效益和环境效益。
Recycling of spent lithium-ion batteries (LIBs) is an urgent need to address their environmental and global sustainability issues. Here, we report an efficient and environmentally benign LIB regeneration method based on defect-targeted healing, which represents a paradigm-shift LIB recycling strategy. Specifically, by combining low-temperature aqueous solution relithiation and rapid post-annealing, we demonstrate successful direct regeneration of spent LiFePO4(LFP) cathodes, one of the most important materials for EVs and grid storage applications. We show revitalization of composition, structure, and electrochemical performance of LFP with various degradation conditions to the same levels as the pristine LFP. Life-cycle analysis of different LIB recycling processes shows that this defect-targeted direct reycling approach can significantly reduce energy usage and greenhouse gas (GHG) emissions, leading to more economic and environmental benefits compared with today's hydrometallurgical and pyrometallurgical methods.