A cation and anion dual-doping strategy in novel Li-rich Mn-based cathode materials for high-performance Li metal batteries

Sun, Xia; Qin, Chunling; Zhao, Boyang; Jia, Shufeng; Wang, Zhifeng; Yang, Tingzhou; Liu, Xuancheng; Pan, Lining; Zheng, Lili; Luo, Dan; Zhang, Yongguang

doi:10.1016/j.ensm.2024.103559

Energy Storage Materials

2024

DOI: 10.1016/j.ensm.2024.103559

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A cation and anion dual-doping strategy in novel Li-rich Mn-based cathode materials for high-performance Li metal batteries

Xia Sun,

Chunling Qin,

Boyang Zhao

et al.

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2024

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Cited by 3 publications

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Simultaneous Regulating the Surface, Interface, and Bulk via Phosphating Modification for High‐Performance Li‐Rich Layered Oxides Cathodes

Lou,

Lin,

Shen

et al. 2024

Advanced Materials

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Li‐rich Mn‐based layered oxides (LRMOs) are regarded as the leading cathode materials to overcome the bottleneck of higher energy density. Nevertheless, they encounter significant challenges, including voltage decay, poor cycle stability, and inferior rate performance, primarily due to irreversible oxygen release, transition metal dissolution, and sluggish transport kinetics. Moreover, traditionally single modification strategies do not adequately address these issues. Herein, an innovative “all‐in‐one” modification strategy is developed, simultaneously regulating the surface, interface, and bulk via an in‐situ gas–solid interface phosphating reaction to create P‐doped Li1.2Mn0.54Ni0.13Co0.13O2@Spinel@Li3PO4. Specifically, Li3PO4 surface coating layer shields particles from electrolyte corrosion and enhances Li+ diffusion; in‐situ constructed spinel interfacial layer reduces phase distortion and suppresses the lattice strain; the strong P─O bond derived from P‐doping stabilizes the lattice oxygen frame and inhibits the release of O2, thereby improving the reversibility of oxygen redox reaction. As a result, the phosphatized LRMO demonstrates an exceptional capacity retention of 82.1% at 1C after 300 cycles (compared to 50.8% for LRMO), an outstanding rate capability of 170.5 mAh g−1 at 5C (vs 98.9 mAh g−1 for LRMO), along with excellent voltage maintenance and thermostability. Clearly, this “all‐in‐one” modification strategy offers a novel approach for high‐energy‐density lithium‐ion batteries.

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Simultaneous Regulating the Surface, Interface, and Bulk via Phosphating Modification for High‐Performance Li‐Rich Layered Oxides Cathodes

Lou,

Lin,

Shen

et al. 2024

Advanced Materials

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Prelithiation enhanced initial Coulombic efficiency and cycling stability of spinel (FeCoCrNiMn)3O4 high entropy oxide anode

Dong,

Luo,

Wang

et al. 2024

Journal of Energy Storage

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Enhanced catalytic performance through a single-atom preparation approach: a review on ruthenium-based catalysts

Yang,

Liu,

Zheng

et al. 2024

Nanoscale

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A cation and anion dual-doping strategy in novel Li-rich Mn-based cathode materials for high-performance Li metal batteries

Cited by 3 publications

References 35 publications

Simultaneous Regulating the Surface, Interface, and Bulk via Phosphating Modification for High‐Performance Li‐Rich Layered Oxides Cathodes

Simultaneous Regulating the Surface, Interface, and Bulk via Phosphating Modification for High‐Performance Li‐Rich Layered Oxides Cathodes

Prelithiation enhanced initial Coulombic efficiency and cycling stability of spinel (FeCoCrNiMn)3O4 high entropy oxide anode

Enhanced catalytic performance through a single-atom preparation approach: a review on ruthenium-based catalysts

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