Efficient direct repairing of lithium- and manganese-rich cathodes by concentrated solar radiation

Lithium- and manganese-rich layered oxide cathode materials have attracted extensive interest because of their high energy density. However, the rapid capacity fading and serve voltage decay over cycling make the waste management and recycling of key components indispensable. Herein, we report a fac...

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Bibliographic Details
Published in:Nature communications 2024-02, Vol.15 (1), p.1634-1634, Article 1634
Main Authors: Wang, Hailong, Geng, Xin, Hu, Linyu, Wang, Jun, Xu, Yunkai, Zhu, Yudong, Liu, Zhimeng, Lu, Jun, Lin, Yuanjing, He, Xin
Format: Article
Language:English
Subjects:
147/137
639/301/299/891
639/4077/4079/891
639/638/161/891
Cathodes
Cations
Decay
Electrochemical analysis
Electrochemistry
Electrode materials
Humanities and Social Sciences
Lithium
Manganese
Metal ions
Metastable state
multidisciplinary
Radiation
Recycling
Science
Science (multidisciplinary)
Solar radiation
Spinel
Transition metals
Voltage
Voltage drop
Waste management
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Summary:Lithium- and manganese-rich layered oxide cathode materials have attracted extensive interest because of their high energy density. However, the rapid capacity fading and serve voltage decay over cycling make the waste management and recycling of key components indispensable. Herein, we report a facile concentrated solar radiation strategy for the direct recycling of Lithium- and manganese-rich cathodes, which enables the recovery of capacity and effectively improves its electrochemical stability. The phase change from layered to spinel on the particle surface and metastable state structure of cycled material provides the precondition for photocatalytic reaction and thermal reconstruction during concentrated solar radiation processing. The inducement of partial inverse spinel phase is identified after concentrated solar radiation treatment, which strongly enhances the redox activity of transition metal cations and oxygen anion, and reversibility of lattice structure. This study sheds new light on the reparation of spent cathode materials and designing high-performance compositions to mitigate structural degradation. Rapid capacity decay and voltage drop hinder lithium- and manganese-rich cathode material (LMRO) development. Here, the authors apply concentrated solar radiation arrays on cycled LMRO electrodes, inducing inverse spinel phase to boost redox activity and reversibility, yielding enhanced electrochemical performance.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-45754-6