Al2O3 coated single-crystalline hexagonal nanosheets of LiNi0.6Co0.2Mn0.2O2 cathode materials for the high-performance lithium-ion batteries

Ma, Ben; Huang, Xumin; Li, Zhaofeng; Tian, Xiaohui; Zhou, Yingke

doi:10.1007/s10853-021-06726-z

Cited by 14 publications

(3 citation statements)

References 53 publications

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“…To analyze the fitting results of the contribution of CPE1 and CPE2 and the goodness of fitting factor, the fitting parameters are provided in the supporting information (Figure S2). The equivalent circuit consists of Re, Rsf, and Rct, which represent the internal resistance, surface film resistance, and charge transfer resistance, respectively [49,50]. The fitted values of Re, Rsf, and Rct are shown in Table 3.…”

Section: Resultsmentioning

confidence: 99%

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

et al. 2022

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LiNi0.8Co0.1Mn0.1O2 (NCM811) has attracted extensive attention as a promising cathode of lithium-ion batteries (LIBs) in next-generation electric vehicles, as the NCM811 sample possesses a high energy density and a price advantage. In this work, NCM811 was modified with an Al(PO3)3 precursor using the dry ball milling method followed by heat treatment to enable commercial development both at room temperature and a higher temperature. Compared with the unmodified NCM811 sample with the capacity retention of 68.70%, after Al(PO3)3 modification, the NCM811 sample heated to 500 °C exhibited a super capacity retention ratio of 93.88% after 200 charging–discharging cycles with the initial discharge capacity of 178.1 mAh g−1 at 1 C. Additionally, after Al(PO3)3 modification, the NCM811 sample heated to 500 °C showed much improved rate performance compared to bare NCM811 at the current density of 5 C. The enhanced electrochemical performance after cycling was due to the decreased charge transfer resistance and increased Li+ transmission, which were confirmed via electrochemical impedance spectra (EIS). The NCM electrodes showed improved structural stability as layered structures after Al(PO3)3 modification, consistent with the improved cycling performance. This work revealed that LiNi0.8Co0.1Mn0.1O2 material with phosphide coating can be constructed using a simple ball milling method, which is feasible for obtaining high-performance electrode materials.

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Section: Resultsmentioning

confidence: 99%

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

et al. 2022

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“…Ma et al . 161 achieved nanoscale Al 2 O 3 coating on the surface of single-crystal NMC622, and the results showed that the single-crystal Al 2 O 3 nanosheet coating facilitated NMC622 to maintain a good layered structure (Fig. 13a and b).…”

Section: Investigation On Strategies To Suppress the Degradation Of T...mentioning

confidence: 96%

“…Also, the role of Al 2 O 3 is to form a stable AlF 3 layer on the surface to achieve physical isolation and to enhance the thermal stability of the material. Ma et al 161 achieved nanoscale Al 2 O 3 coating on the surface of single-crystal NMC622, and the results showed that the singlecrystal Al 2 O 3 nanosheet coating facilitated NMC622 to maintain Fig. 12 The requirements and challenges of modern research on cathode material coating strategies and the four common forms of surface coating.…”

Section: Electrochemically Inert Materials Coatingmentioning

confidence: 99%

A review on nickel-rich nickel–cobalt–manganese ternary cathode materials LiNi_0.6Co_0.2Mn_0.2O₂ for lithium-ion batteries: performance enhancement by modification

Chang,

Yang,

Cai

et al. 2023

Mater. Horiz.

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Challenges and Strategies towards Single‐Crystalline Ni‐Rich Layered Cathodes

Zhang

et al. 2022

Advanced Energy Materials

125

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The ever‐increasing energy density requirements in electric vehicles (EVs) have boosted the development of Ni‐rich layered oxide cathodes for state‐of‐the‐art lithium‐ion batteries. Nevertheless, the commercialization of polycrystalline Ni‐rich cathodes (PCNCs) is hindered by the severe performance degradation and safety concerns that are tightly related to its particle cracking during cycling. Single‐crystalline Ni‐rich cathodes (SCNCs) with eliminated grain boundaries and high mechanical strength have recently attracted extensive attention owing to their superior structural and cycling stability, which present high crack resistance during electrochemical operation. Various articles have focused on the trial‐and‐error synthesis and modifications of SCNCs, as well as the comparison of performances and mechanisms with PCNCs. However, there has been much less effort in systematic analysis and summary to reveal their key challenges, controversies, and the corresponding primary causes. In this review, the advantages and debates in structural and electrochemical properties of SCNCs over PCNCs are summarized to provide fundamental understanding of SCNCs. Then the current practical issues and challenges are comprehensively discussed from the viewpoints of both academia and industry, as well as the proposed modification strategies and underlying mechanisms for SCNCs. The outlook and perspectives are further given to facilitate the commercial applications of SCNCs in high‐performance EVs.

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Al2O3 coated single-crystalline hexagonal nanosheets of LiNi0.6Co0.2Mn0.2O2 cathode materials for the high-performance lithium-ion batteries

Cited by 14 publications

References 53 publications

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

A review on nickel-rich nickel–cobalt–manganese ternary cathode materials LiNi_0.6Co_0.2Mn_0.2O₂ for lithium-ion batteries: performance enhancement by modification

Challenges and Strategies towards Single‐Crystalline Ni‐Rich Layered Cathodes

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Al2O3 coated single-crystalline hexagonal nanosheets of LiNi0.6Co0.2Mn0.2O2 cathode materials for the high-performance lithium-ion batteries

Cited by 14 publications

References 53 publications

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

A review on nickel-rich nickel–cobalt–manganese ternary cathode materials LiNi0.6Co0.2Mn0.2O2 for lithium-ion batteries: performance enhancement by modification

Challenges and Strategies towards Single‐Crystalline Ni‐Rich Layered Cathodes

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A review on nickel-rich nickel–cobalt–manganese ternary cathode materials LiNi_0.6Co_0.2Mn_0.2O₂ for lithium-ion batteries: performance enhancement by modification