Recycling of LiNi1/3Co1/3Mn1/3O2 in waste lithium-ion batteries by N-methyl-pyrrolidone

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Bulletin of Materials Science Pub Date : 2024-08-13 DOI:10.1007/s12034-024-03277-2

Qipeng Chen, Yubo Cui, Zhenfu Pei, Peng Wang, Zhi Zheng, Libo Fan

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Abstract

An easily industrialized method for the synthesis of LiNi_1/3Co_1/3Mn_1/3O₂ from waste lithium-ion batteries (LIBs) is developed in this study. The positive electrode-active material is recycled by N-methyl-pyrrolidone (NMP) and calcination without using organic acid to leach metal. The recycling process parameters, including reaction time, reaction temperatures and solid–liquid ratios, are used to optimize the recycling process. The results show that the reaction time of 20 min, the temperature of 60°C and the solid–liquid ratio of 80 g l^–1 lead to a recovery rate of 82%. Carbonates are added to the recycled material to adjust the metal ion ratios and the structures to re-synthesize LiNi_xCo_yMn_zO₂ (LNCMO). The structure of the re-synthesized LNCMO is characterized by X-ray diffraction analysis and scanning electron microscopy. Electrochemical tests suggest that the waste LIBs can be recycled to re-synthesize new cathode materials with good electrochemical performance, which is comparable to the cathode materials prepared with commercial chemicals.

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用 N-甲基吡咯烷酮回收废锂离子电池中的 LiNi1/3Co1/3Mn1/3O2

本研究开发了一种从废弃锂离子电池（LIB）中合成 LiNi1/3Co1/3Mn1/3O2 的简便工业化方法。正电活性材料通过 N-甲基吡咯烷酮（NMP）和煅烧回收，不使用有机酸浸出金属。利用反应时间、反应温度和固液比等回收工艺参数对回收工艺进行了优化。结果表明，反应时间为 20 分钟，温度为 60°C，固液比为 80 g l-1，回收率可达 82%。在回收材料中加入碳酸盐以调整金属离子比例和结构，从而重新合成 LiNixCoyMnzO2（LNCMO）。X 射线衍射分析和扫描电子显微镜对重新合成的 LNCMO 结构进行了表征。电化学测试表明，废锂电池可以回收利用，重新合成出具有良好电化学性能的新阴极材料，其性能可与使用商业化学品制备的阴极材料相媲美。

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来源期刊

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.