Fully coating of Mg3B2O6 in nonaqueous solution on Ni-rich LiNi0.8Co0.1Mn0.1O2 secondary particles to improve cycling stability of lithium-ion batteries

Yang, Guangchang; Pan, Kai; Yan, Zhixiong; Yang, Shenglong; Fan, Peng; Liang, Jingyao; Lai, Feiyan; Wang, Hongqiang; Zhang, Xiaohui; Li, Qingyu

doi:10.1016/j.cej.2022.139405

Cited by 9 publications

(1 citation statement)

References 46 publications

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“…[27] In F 1s XPS spectrum (Figure S14d, Supporting Information), the peak at ≈685 eV evidenced the existence of LiF, which originates from the decomposition and hydrolysis of LiPF 6 salt. [44] Thus, LR-LNO showed suppressed side reaction and higher interface stability, which is in agreement with EIS test (Figure 5a,b) evidencing lower impedance and DEMS result (Figure 7e,f) indicating mitigated release of O 2 .…”

Section: Origin Of Improved Electrochemical Performancesupporting

confidence: 85%

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li₁₊_xNi_1–_xO₂ with Improved Structural Stability

Ding

Yao

et al. 2023

Advanced Energy Materials

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Cobalt-free LiNiO 2 is an attractive cathode material with high energy density and low cost but suffers from severe structural degradation and poor performance. Here, a molten salt-assisted synthesis combined with a Li-refeeding strategy is proposed to obtain nonstoichiometric Li 1+x Ni 1-x O 2 with submicron particle size and superior rate performance. The slightly Li-rich and single-crystalline characters inhibit Li + /Ni 2+ anti-site defects and mitigates the undesirable phase evolution. Remarkably, single-crystalline Li 1.045 Ni 0.955 O 2 exhibits a high specific capacity (218.7 mAh g −1 at 0.1 C), considerable rate capability (187.0 mAh g −1 at 5 C), and an initial Coulombic efficiency (89.62% at 0.1 C) in the 1.27 Ah pouch full cell employing the graphite anode, significantly outperforming near stoichiometric LiNiO 2 . Furthermore, the particulate morphology of Li 1.045 Ni 0.955 O 2 remains intact at charge voltages up to 4.8 V, whereas near stoichiometric LiNiO 2 features intragranular cracks and irreversible lattice distortion. This study underscores the value of molten salt-assisted synthesis and Li-refeeding modification to upgrade Ni-based layered oxide cathode materials for advanced Li-ion batteries.

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Section: Origin Of Improved Electrochemical Performancesupporting

confidence: 85%

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li₁₊_xNi_1–_xO₂ with Improved Structural Stability

Ding

Yao

et al. 2023

Advanced Energy Materials

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Structures, issues, and optimization strategies of Ni-rich and Co-low cathode materials for lithium-ion battery

Xie

Peng

Jiang

et al. 2023

Chemical Engineering Journal

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Architecting versatile NiFe2O4 coating for enhancing structural stability and rate capability of layered Ni-rich cathodes

Yuan

Wang

Sun

et al. 2023

Chemical Engineering Journal

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Fully coating of Mg3B2O6 in nonaqueous solution on Ni-rich LiNi0.8Co0.1Mn0.1O2 secondary particles to improve cycling stability of lithium-ion batteries

Cited by 9 publications

References 46 publications

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li₁₊_xNi_1–_xO₂ with Improved Structural Stability

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li₁₊_xNi_1–_xO₂ with Improved Structural Stability

Structures, issues, and optimization strategies of Ni-rich and Co-low cathode materials for lithium-ion battery

Architecting versatile NiFe2O4 coating for enhancing structural stability and rate capability of layered Ni-rich cathodes

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Fully coating of Mg3B2O6 in nonaqueous solution on Ni-rich LiNi0.8Co0.1Mn0.1O2 secondary particles to improve cycling stability of lithium-ion batteries

Cited by 9 publications

References 46 publications

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li1+xNi1–xO2 with Improved Structural Stability

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li1+xNi1–xO2 with Improved Structural Stability

Structures, issues, and optimization strategies of Ni-rich and Co-low cathode materials for lithium-ion battery

Architecting versatile NiFe2O4 coating for enhancing structural stability and rate capability of layered Ni-rich cathodes

Contact Info

Product

Resources

About

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li₁₊_xNi_1–_xO₂ with Improved Structural Stability

Molten Salt‐Assisted Synthesis of Single‐Crystalline Nonstoichiometric Li₁₊_xNi_1–_xO₂ with Improved Structural Stability