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Rapid, Direct Regeneration of Spent LiCoO2 Cathodes for Li-Ion Batteries
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-06-14 , DOI: 10.1021/acsenergylett.3c00635 Yun-Chao Yin 1, 2 , Chao Li 1 , Xueshan Hu 1 , Daxian Zuo 1 , Lin Yang 1 , Lihui Zhou 3 , Jinlong Yang 2 , Jiayu Wan 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-06-14 , DOI: 10.1021/acsenergylett.3c00635 Yun-Chao Yin 1, 2 , Chao Li 1 , Xueshan Hu 1 , Daxian Zuo 1 , Lin Yang 1 , Lihui Zhou 3 , Jinlong Yang 2 , Jiayu Wan 1
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Recycling of spent lithium-ion batteries is essential for the sustainable development of renewable energy technologies, as it promotes resource reuse and environmental protection. Recycling cathode materials is particularly important due to their high concentration of strategic elements. However, traditional recycling methods for cathode materials are often inefficient due to high energy consumption and prolonged operation time. Here, we present an efficient, one-step, nondestructive method for regenerating spent LiCoO2 cathodes within seconds. This method simultaneously achieves relithiation of the cathode material and repair of the crystal structure through rapid Joule heating. Compared to traditional repair methods, this process exhibits low energy consumption and shortened operation time. After an 8 s repair process, the regenerated LiCoO2 has a well-defined layered structure and is restored to its original electrochemical performance, with an initial discharge capacity of 133.0 mAh/g and good cycling performance. This work represents a potentially universal approach for the efficient direct regeneration of cathode materials.
中文翻译：
锂离子电池用过的 LiCoO2 阴极的快速、直接再生
废旧锂离子电池的回收对于可再生能源技术的可持续发展至关重要，因为它可以促进资源再利用和环境保护。由于正极材料的战略元素高度集中，回收利用尤为重要。然而，传统的正极材料回收方法往往由于能耗高、运行时间长而效率低下。在这里，我们提出了一种高效、一步、无损的方法来再生废 LiCoO 2几秒钟内阴极。该方法通过快速焦耳加热同时实现正极材料的再锂化和晶体结构的修复。与传统的修复方法相比，该过程能耗低，操作时间短。经过8 s的修复过程，再生的LiCoO 2具有清晰的层状结构，恢复到原来的电化学性能，首次放电容量为133.0 mAh/g，循环性能良好。这项工作代表了一种潜在的通用方法，可有效直接再生阴极材料。
更新日期：2023-06-14
中文翻译：
锂离子电池用过的 LiCoO2 阴极的快速、直接再生
废旧锂离子电池的回收对于可再生能源技术的可持续发展至关重要，因为它可以促进资源再利用和环境保护。由于正极材料的战略元素高度集中，回收利用尤为重要。然而，传统的正极材料回收方法往往由于能耗高、运行时间长而效率低下。在这里，我们提出了一种高效、一步、无损的方法来再生废 LiCoO 2几秒钟内阴极。该方法通过快速焦耳加热同时实现正极材料的再锂化和晶体结构的修复。与传统的修复方法相比，该过程能耗低，操作时间短。经过8 s的修复过程，再生的LiCoO 2具有清晰的层状结构，恢复到原来的电化学性能，首次放电容量为133.0 mAh/g，循环性能良好。这项工作代表了一种潜在的通用方法，可有效直接再生阴极材料。
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