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Preferentially selective extraction of lithium from spent LiCoO2 cathodes by medium-temperature carbon reduction roasting

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Abstract

Lithium recovery from spent lithium-ion batteries (LIBs) have attracted extensive attention due to the skyrocketing price of lithium. The medium-temperature carbon reduction roasting was proposed to preferential selective extraction of lithium from spent Li-CoO2 (LCO) cathodes to overcome the incomplete recovery and loss of lithium during the recycling process. The LCO layered structure was destroyed and lithium was completely converted into water-soluble Li2CO3 under a suitable temperature to control the reduced state of the cobalt oxide. The Co metal agglomerates generated during medium-temperature carbon reduction roasting were broken by wet grinding and ultrasonic crushing to release the entrained lithium. The results showed that 99.10% of the whole lithium could be recovered as Li2CO3 with a purity of 99.55%. This work provided a new perspective on the preferentially selective extraction of lithium from spent lithium batteries.

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Acknowledgements

This work was supported by the Science and Technology Key Project of Anhui Province, China (No. 2022e03020004).

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Authors and Affiliations

  1. School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Daixiang Wei, Zhidong Chang, Hualei Zhou, Bin Dong, Minghui Zhang & Chaofan Wu

  2. State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China

    Wei Wang

  3. Anhui Chaoyue Environmental Protection Technology Co., Ltd, Chuzhou, 239060, China

    Longjin Jiang

  4. Anhui Huihong Technology Co., Ltd, Chuzhou, 239060, China

    Dekun Gao

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  1. Daixiang Wei
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  2. Wei Wang
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Correspondence to Wei Wang or Zhidong Chang.

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12613_2023_2698_MOESM1_ESM.docx

Preferentially selective extraction of lithium from spent LiCoO2 cathodes by medium-temperature carbon reduction roasting

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Wei, D., Wang, W., Jiang, L. et al. Preferentially selective extraction of lithium from spent LiCoO2 cathodes by medium-temperature carbon reduction roasting. Int J Miner Metall Mater 31, 315–322 (2024). https://doi.org/10.1007/s12613-023-2698-2

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