Direct regeneration of LiNi0.5Co0.2Mn0.3O2 cathode material from spent lithium-ion batteries

doi:10.1016/j.cjche.2021.10.012

中国化学工程学报 ›› 2021, Vol. 40 ›› Issue (12): 278-286.DOI: 10.1016/j.cjche.2021.10.012

• Resources and Environmental Technology • 上一篇下一篇

Direct regeneration of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material from spent lithium-ion batteries

Xiaodong Tang, Qiankun Guo, Miaomiao Zhou, Shengwen Zhong

Faculty of Materials Melallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China

收稿日期:2021-02-25 修回日期:2021-10-26 出版日期:2021-12-28 发布日期:2022-01-14
通讯作者: Shengwen Zhong,E-mail:zhongsw-jxust@1outlook.com

Direct regeneration of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material from spent lithium-ion batteries

Xiaodong Tang, Qiankun Guo, Miaomiao Zhou, Shengwen Zhong

Faculty of Materials Melallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China

Received:2021-02-25 Revised:2021-10-26 Online:2021-12-28 Published:2022-01-14
Contact: Shengwen Zhong,E-mail:zhongsw-jxust@1outlook.com

摘要/Abstract

摘要： At present, metal ions from spent lithium-ion batteries are mostly recovered by the acid leaching procedure, which unavoidably introduces potential pollutants to the environment. Therefore, it is necessary to develop more direct and effective green recycling methods. In this research, a method for the direct regeneration of anode materials is reported, which includes the particles size reduction of recovered raw materials by jet milling and ball milling, followed by calcination at high temperature after lithium supplementation. The regenerated LiNi_0.5Co_0.2Mn_0.3O₂ single-crystal cathode material possessed a relatively ideal layered structure and a complete surface morphology when the lithium content was n(Ni + Co + Mn):n(Li) = 1:1.10 at a sintering temperature of 920 ℃, and a sintering time of 12 h. The first discharge specific capacity was 154.87 mA·h·g^-1 between 2.75 V and 4.2 V, with a capacity retention rate of 90% after 100 cycles.

关键词: Spent lithium-ion batteries, LiNi_0.5Co_0.2Mn_0.3O₂ cathode material, Direct regeneration

Abstract: At present, metal ions from spent lithium-ion batteries are mostly recovered by the acid leaching procedure, which unavoidably introduces potential pollutants to the environment. Therefore, it is necessary to develop more direct and effective green recycling methods. In this research, a method for the direct regeneration of anode materials is reported, which includes the particles size reduction of recovered raw materials by jet milling and ball milling, followed by calcination at high temperature after lithium supplementation. The regenerated LiNi_0.5Co_0.2Mn_0.3O₂ single-crystal cathode material possessed a relatively ideal layered structure and a complete surface morphology when the lithium content was n(Ni + Co + Mn):n(Li) = 1:1.10 at a sintering temperature of 920 ℃, and a sintering time of 12 h. The first discharge specific capacity was 154.87 mA·h·g^-1 between 2.75 V and 4.2 V, with a capacity retention rate of 90% after 100 cycles.

Key words: Spent lithium-ion batteries, LiNi_0.5Co_0.2Mn_0.3O₂ cathode material, Direct regeneration

Xiaodong Tang, Qiankun Guo, Miaomiao Zhou, Shengwen Zhong. Direct regeneration of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material from spent lithium-ion batteries[J]. 中国化学工程学报, 2021, 40(12): 278-286.

Xiaodong Tang, Qiankun Guo, Miaomiao Zhou, Shengwen Zhong. Direct regeneration of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material from spent lithium-ion batteries[J]. Chinese Journal of Chemical Engineering, 2021, 40(12): 278-286.

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Direct regeneration of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material from spent lithium-ion batteries

Direct regeneration of LiNi_0.5Co_0.2Mn_0.3O₂ cathode material from spent lithium-ion batteries

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