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Regeneration of degraded cathode materials from spent LIBs via eutectic solutions

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Abstract

This paper mainly aims at recycling the spent lithium-ion battery. The process is very innovative, simple, and feasible. It directly regenerates the degraded cathode material NCM613. In the air atmosphere, the low eutectic mixture LiNO3-LiOH is used as lithium salt for lithium supplements. The results of ICP, XRD, and SEM show that the components and crystal structure of the degraded cathode material can be regenerated to the pristine. The electrochemical results show that the discharge capacity can reach 175.25 mAh/g (0.1 C), and the charge–discharge coulomb efficiency is 87.8%. After 1000 cycles under the condition of 1 C, the capacity retention rate is 94.5%. Compared with the degraded cathode material, the cycling performance is greatly improved, which is similar to the Pristine NCM613 material. This research provides a unique idea for the green recycling of lithium batteries.

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Funding

This project was supported by the science and technology project of State Grid Zhejiang Electric Power Co., Ltd. (5211UZ2000K1).

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Authors and Affiliations

  1. Huzhou Power Supply Company, State Grid Zhejiang Electric Power Company Ltd, Huzhou, 313000, China

    Minyuan Guan, Ping Lou & Jianfeng Yao

  2. State Grid Zhejiang Electric Power Company Ltd, Hangzhou, 310007, China

    Xiaogang Chen

  3. Huazhong University of Science and Technology, Wuhan, 430074, China

    Weixin Zhang & Qi Cheng

Authors
  1. Minyuan Guan
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  2. Xiaogang Chen
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  3. Ping Lou
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  4. Jianfeng Yao
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  5. Weixin Zhang
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  6. Qi Cheng
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Correspondence to Qi Cheng.

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Guan, M., Chen, X., Lou, P. et al. Regeneration of degraded cathode materials from spent LIBs via eutectic solutions. Ionics 28, 5469–5474 (2022). https://doi.org/10.1007/s11581-022-04749-3

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  • DOI: https://doi.org/10.1007/s11581-022-04749-3

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