Modification of Li3PO4 layer effectively boosting lithium storage and thermal safety performance for LiCoO2 batteries

Zhang, Weijun; Qiu, Caifang; Lin, Zhongfeiyu; Zhao, Guiying; Liu, Yingying; Wang, Pengcheng; Lin, Yingbin; Huang, Zhigao; Li, Jiaxin

doi:10.1016/j.jechem.2024.08.010

Journal of Energy Chemistry

2024

DOI: 10.1016/j.jechem.2024.08.010

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Modification of Li3PO4 layer effectively boosting lithium storage and thermal safety performance for LiCoO2 batteries

Weijun Zhang,

Caifang Qiu,

Zhongfeiyu Lin

et al.

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Promoting Cyclability, Rate Performance, and Safety of LiNi_0.85Co_0.13Al_0.02O₂ by in Situ Forming LiTi₂(PO₄)₃/C Shell

Wang,

Luo,

Wang

2024

Ind. Eng. Chem. Res.

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LiNi 0.85 Co 0.13 Al 0.02 O 2 (NCA) is attractive for high capacity but faces challenges like stability and thermal runaway. To address the issues, quasi-spherical nanoscaled LiTi 2 (PO 4 ) 3 (LTP), a fast ion conductor with a negative thermal expansion property, is synthesized and utilized to modify NCA. The effects of LTP on the performance and deformation of NCA are evaluated using multifarious methods. NCA modified with 7 wt % LTP exhibits the best performance, and its discharge capacities can retain 167.4 and 160.4 mAh g −1 at 25 and 60 °C after 100 cycles, respectively, much higher than those of NCA. Furthermore, the structural integrity and thermal stability of NCA are significantly improved, and the Li + diffusion coefficient is increased around 70.2%, while the strain and R ct are declined about 77.3% and 65.7%, respectively. LTP and carbon (LTP@C) in situ form a shell to cover NCA particles during cycles. The electrode reaction process, interface, and mechanism are discussed. It represents a strategy to update energy materials.

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Promoting Cyclability, Rate Performance, and Safety of LiNi_0.85Co_0.13Al_0.02O₂ by in Situ Forming LiTi₂(PO₄)₃/C Shell

Wang,

Luo,

Wang

2024

Ind. Eng. Chem. Res.

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Modification of Li3PO4 layer effectively boosting lithium storage and thermal safety performance for LiCoO2 batteries

Cited by 1 publication

References 52 publications

Promoting Cyclability, Rate Performance, and Safety of LiNi_0.85Co_0.13Al_0.02O₂ by in Situ Forming LiTi₂(PO₄)₃/C Shell

Promoting Cyclability, Rate Performance, and Safety of LiNi_0.85Co_0.13Al_0.02O₂ by in Situ Forming LiTi₂(PO₄)₃/C Shell

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Modification of Li3PO4 layer effectively boosting lithium storage and thermal safety performance for LiCoO2 batteries

Cited by 1 publication

References 52 publications

Promoting Cyclability, Rate Performance, and Safety of LiNi0.85Co0.13Al0.02O2 by in Situ Forming LiTi2(PO4)3/C Shell

Promoting Cyclability, Rate Performance, and Safety of LiNi0.85Co0.13Al0.02O2 by in Situ Forming LiTi2(PO4)3/C Shell

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Product

Resources

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Promoting Cyclability, Rate Performance, and Safety of LiNi_0.85Co_0.13Al_0.02O₂ by in Situ Forming LiTi₂(PO₄)₃/C Shell

Promoting Cyclability, Rate Performance, and Safety of LiNi_0.85Co_0.13Al_0.02O₂ by in Situ Forming LiTi₂(PO₄)₃/C Shell