Enhanced stability and high-rate performance of LiNi0.8Co0.1Mn0.1O2 by surface topological synthesis of rare earth polymetallic oxides coating

Lü, Biao; Ma, Shihang; Feng, Hongbin

doi:10.1016/j.jallcom.2023.170795

Cited by 4 publications

(1 citation statement)

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“…As listed in Table 2, the LLZTO modified NCM811 exhibits substantially improved cycle performance compared with that reported in literature. [31][32][33][34][35][36][37][38][39] Figure 4(a) show the rate performance of LLZTO modified NCM811 cathode with a staircase C-rate protocol involving 0.2 C, 0.5 C, 1 C, 3 C, 5 C, and 10 C back to 0.5 C. The NCM811@1 wt%LLZTO cathode delivers larger discharge capacity than the pristine NCM811 at all C-rates, especially at the rate higher than 3 C. The corresponding discharge/charge profiles are shown in Cyclic voltammetry (CV) and galvanostatic intermittent titration technique (GITT) are applied to clarify the kinetics performance of the cathode materials. Both NCM811 and LLZTO modified NCM811 samples are investigated in a voltage range from 3.0 V to 4.5 V, and the scan rates are 0.1, 0.2, 0.3, and 0.4 mV•s −1 .…”

Section: Materials Preparationmentioning

confidence: 99%

Long-Cycle Lithium Batteries with LiNi_0.8Co_0.1Mn_0.1O₂ Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Wang 王,

Zhao 赵,

Guo 郭

2024

Chinese Phys. Lett.

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The pursuit of high-energy cathode materials has been focused on raising the charging cut-off voltage of Nickel(Ni)-rich layered oxide cathode such as LiNi0.8Co0.1Mn0.1O2 (NCM811). However, the NCM811 suffers from rapid capacity fading upon cycling at cut-off voltage higher than 4.5 V, owing to their structural degradation and labile surface reactivity. Surface-coating with solid electrolytes has been recognized as an effective method to mitigate the performance failure of NCM811 at high voltage. Herein, the nano-sized Li6.4La3Ta0.6Zr1.4O12 (LLZTO) is uniformly coated on the surface of single-crystal NCM811 particles, accompanied with the longrange Ta5+ diffusion into the transition metal layer of NCM811 lattice. It is revealed that the LLZTO coating can not only inhibit the surface reactions of NCM811 with liquid electrolytes but also play an important role in suppressing the bulk microcracking within the NCM811 particles. The incorporation of Ta5+ ion expands the lattice spacing and thereby improves the homogeneity of the Li+ diffusion in the single-crystal NCM811, which alleviates the mechanical strain and intragranular cracks caused by nonuniform phases-transformation at high charging voltage. The synergy of surface protection and structural stabilization realized by LLZTO coating enables the NCM811- based lithium batteries to achieve a remarkable electrochemical performance. Typically, LLZTO coated NCM811 delivers a high reversible specific capacity of 202.1 mAh g-1 with an excellent capacity retention as high as 70 % over 1000 cycles upon charging to 4.5 V at 1 C.

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Section: Materials Preparationmentioning

confidence: 99%

Long-Cycle Lithium Batteries with LiNi_0.8Co_0.1Mn_0.1O₂ Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Wang 王,

Zhao 赵,

Guo 郭

2024

Chinese Phys. Lett.

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Surface Engineering of Cathode Materials: Enhancing the High Performance of Lithium‐Ion Batteries

Qi,

Wang,

Huang

et al. 2024

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The development and application of lithium‐ion batteries present a dual global prospect of opportunity and challenge. With conventional energy sources facing reserve shortages and environmental issues, lithium‐ion batteries have emerged as a transformative technology over the past decade, owing to their superior properties. They are poised for exponential growth in the realms of electric vehicles and energy storage. The cathode, a vital component of lithium‐ion batteries, undergoes chemical and electrochemical reactions at its surface that directly impact the battery's energy density, lifespan, power output, and safety. Despite the increasing energy density of lithium‐ion batteries, their cathodes commonly encounter surface‐side reactions with the electrolyte and exhibit low conductivity, which hinder their utility in high‐power and energy‐storage applications. Surface engineering has emerged as a compelling strategy to address these challenges. This paper meticulously examines the principles and progress of surface engineering for cathode materials, providing insights into its potential advancements and charting its development trajectory for practical implementation.

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High structural stability of graphene coated nickel – rich cathode material in Li – ion battery

Xue

2023

Journal of Alloys and Compounds

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Enhanced stability and high-rate performance of LiNi0.8Co0.1Mn0.1O2 by surface topological synthesis of rare earth polymetallic oxides coating

Cited by 4 publications

References 45 publications

Long-Cycle Lithium Batteries with LiNi_0.8Co_0.1Mn_0.1O₂ Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Long-Cycle Lithium Batteries with LiNi_0.8Co_0.1Mn_0.1O₂ Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Surface Engineering of Cathode Materials: Enhancing the High Performance of Lithium‐Ion Batteries

High structural stability of graphene coated nickel – rich cathode material in Li – ion battery

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Enhanced stability and high-rate performance of LiNi0.8Co0.1Mn0.1O2 by surface topological synthesis of rare earth polymetallic oxides coating

Cited by 4 publications

References 45 publications

Long-Cycle Lithium Batteries with LiNi0.8Co0.1Mn0.1O2 Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Long-Cycle Lithium Batteries with LiNi0.8Co0.1Mn0.1O2 Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Surface Engineering of Cathode Materials: Enhancing the High Performance of Lithium‐Ion Batteries

High structural stability of graphene coated nickel – rich cathode material in Li – ion battery

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Product

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Long-Cycle Lithium Batteries with LiNi_0.8Co_0.1Mn_0.1O₂ Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes

Long-Cycle Lithium Batteries with LiNi_0.8Co_0.1Mn_0.1O₂ Cathodes above 4.5V Enabled by Uniform Coating of Nanosized Garnet Electrolytes