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A Universal Molten Salt Method for Direct Upcycling of Spent Ni-rich Cathode towards Single-crystalline Li-rich Cathode
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2023-04-21 , DOI: 10.1002/anie.202218672
Zuoyu Qin 1 , Ying Zhang 2 , Wuqing Luo 1 , Tao Zhang 1 , Tao Wang 3 , Lianshan Ni 4 , Haoji Wang 4 , Ning Zhang 1 , Xiaohe Liu 2 , Jiang Zhou 1 , Gen Chen 1
Affiliation  

Direct upcycling of a spent Ni-rich cathode (LiNi0.88Co0.095Al0.025O2, NCA) to a single-crystalline and Li-rich cathode is achieved for Li-ion batteries in a binary LiOH-Na2SO4 system. The regenerated NCA exhibits a remarkable electrochemical performance in terms of long-term cyclability, high rate performance and low polarization. This strategy can be extended to other cathode materials e.g., LiNixCoyMnzO2 (NCM) and mixed spent NCAs with varied Li compositions.

中文翻译:

一种通用的熔盐方法,用于将用过的富镍阴极直接升级为单晶富锂阴极

对于二元 LiOH-Na 2 SO 4 系统中的锂离子电池,实现了将用过镍阴极(LiNi 0.88 Co 0.095 Al 0.025 O 2 ,​​NCA)直接升级回收为单晶富锂阴极。再生的 NCA 在长期循环性能、高倍率性能和低极化方面表现出卓越的电化学性能。该策略可以扩展到其他正极材料,例如 LiNi x Co y Mn z O 2 (NCM) 和具有不同 Li 组成的混合废 NCA。
更新日期:2023-04-21
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