Improving electrochemical performances of LiNi0.5Mn1.5O4 by the strategy of oxygen vacancy doping

Ding, Hao; Wang, Peng; Zhang, Ningshuang; Zhou, Junfei; Li, Xin; Li, Chengyu; Zhao, Dongni; Li, Shiyou

doi:10.1016/j.apmt.2024.102248

Applied Materials Today

2024

DOI: 10.1016/j.apmt.2024.102248

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Improving electrochemical performances of LiNi0.5Mn1.5O4 by the strategy of oxygen vacancy doping

Hao Ding,

Peng Wang,

Ningshuang Zhang

et al.

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Understanding and Controlling Structural Defects and Disordering in LiNi_0.5Mn_1.5O₄ Cathodes for Direct Recycling

Gao,

Han,

Tran

et al. 2024

ACS Nano

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Despite significant progress in recycling spent lithium-ion batteries (LIBs), nondestructive, direct recycling methods still face untenable discrepancies in multiple cathode chemistries, which primarily originate from a variety of structure stabilities during the recycling process. Through systematic investigation of the microstructure evolution during the relithiation treatment, we observed the inevitably induced defects and Li/Mn disordering in the LiNi 0.5 Mn 1.5 O 4 cathode, contributing to the sluggish Li + transport and irreversible capacity loss. Employing a defect engineering approach to achieve twin boundaries and preferred grain orientation, we show the regenerated cathodes demonstrate a substantial enhancement of Li + diffusion and cycling stability, retaining 97.4% capacity after 100 cycles and 87.96% after 200 cycles at C/3. This work not only elaborates on a systematic investigation of defect inducement and structural restoration mechanism but also provides an effective approach to directly recycle highvoltage spinel-type cathodes, contributing to the sustainability of next-generation LIBs.

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Understanding and Controlling Structural Defects and Disordering in LiNi_0.5Mn_1.5O₄ Cathodes for Direct Recycling

Gao,

Han,

Tran

et al. 2024

ACS Nano

View full text Add to dashboard Cite

show abstract

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Improving electrochemical performances of LiNi0.5Mn1.5O4 by the strategy of oxygen vacancy doping

Cited by 1 publication

References 43 publications

Understanding and Controlling Structural Defects and Disordering in LiNi_0.5Mn_1.5O₄ Cathodes for Direct Recycling

Understanding and Controlling Structural Defects and Disordering in LiNi_0.5Mn_1.5O₄ Cathodes for Direct Recycling

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Improving electrochemical performances of LiNi0.5Mn1.5O4 by the strategy of oxygen vacancy doping

Cited by 1 publication

References 43 publications

Understanding and Controlling Structural Defects and Disordering in LiNi0.5Mn1.5O4 Cathodes for Direct Recycling

Understanding and Controlling Structural Defects and Disordering in LiNi0.5Mn1.5O4 Cathodes for Direct Recycling

Contact Info

Product

Resources

About

Understanding and Controlling Structural Defects and Disordering in LiNi_0.5Mn_1.5O₄ Cathodes for Direct Recycling

Understanding and Controlling Structural Defects and Disordering in LiNi_0.5Mn_1.5O₄ Cathodes for Direct Recycling