Yttrium modified Ni-rich LiNi0.8Co0.1Mn0.1O2 with enhanced electrochemical performance as high energy density cathode material at 4.5 V high voltage

Zhang, Meiling; Zhao, Hongyuan; Tan, Ming Jen; Liu, Jintao; Hu, Youzuo; Liu, Shanshan; Shu, Xiaohui; Li, Hao; Ran, Qiwen; Cai, Jingjing; Liu, Xingquan

doi:10.1016/j.jallcom.2018.09.281

Cited by 121 publications

(68 citation statements)

References 51 publications

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“…(1) Reduced phase transitions and improved mechanical property: Na, 21 K, 22 Rb, 23 Mg, 24 Y, 25 Al, 26 Zr, 27 Ga, 28…”

Section: Introductionmentioning

confidence: 99%

“…(3) Decreased oxygen loss or increased thermal stability: W, 32 Y, 25 Sb, 33 Ti, 34 Zr, 35 (4) Reduced acid-mediated parasitic reactions: Mo, 36 W, 32 F 37 . Generally, the impact of dopants is challenging to deconvolute, as any addition to the active electrode material affect its operational performance in a multitude of ways at different length scales depending on how the dopant incorporates.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing surface oxygen retention through theory-guided doping selection in Li_1−xNiO₂ for next-generation lithium-ion batteries

Cheng

Wang

et al. 2020

J. Mater. Chem. A

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“…(1) Reduced phase transitions and improved mechanical property: Na, 21 K, 22 Rb, 23 Mg, 24 Y, 25 Al, 26 Zr, 27 Ga, 28…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing surface oxygen retention through theory-guided doping selection in Li_1−xNiO₂ for next-generation lithium-ion batteries

Cheng

Wang

et al. 2020

J. Mater. Chem. A

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“…In addition, the IR drop of the NCMF cathode was 0.013 V, lower than that of the NCM cathode (0.028 V), indicating both reduced resistance to Li + ion diffusion and less variation of the discharge voltage. The enhanced Li + ion behavior into NCMF as an active material during cycling may be attributed to the F-doping of the cathode, which can increase the d-spacing of the NCM structure [41]. Figure 6a compares the cycling performance of the NCM and NCMF cathodes measured from 20 to 600 mA g −1 .…”

Section: Resultsmentioning

confidence: 99%

Fluorine-Doped LiNi0.8Mn0.1Co0.1O2 Cathode for High-Performance Lithium-Ion Batteries

Kim

Park

et al. 2020

Energies

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For advanced lithium-ion batteries, LiNixCoyMnzO2 (x + y + z = 1) (NCM) cathode materials containing a high nickel content have been attractive because of their high capacity. However, to solve severe problems such as cation mixing, oxygen evolution, and transition metal dissolution in LiNi0.8Co0.1Mn0.1O2 cathodes, in this study, F-doped LiNi0.8Co0.1Mn0.1O2 (NCMF) was synthesized by solid-state reaction of a NCM and ammonium fluoride, followed by heating process. From X-ray diffraction analysis and X-ray photoelectron spectroscopy, the oxygen in NCM can be replaced by F− ions to produce the F-doped NCM structure. The substitution of oxygen with F− ions may produce relatively strong bonds between the transition metal and F and increase the c lattice parameter of the structure. The NCMF cathode exhibits better electrochemical performance and stability in half- and full-cell tests compared to the NCM cathode.

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“…Doping is generally recognized as an effective strategy to adjust the properties of materials 178. And many elements have been reported doped into the Ni‐rich NCM cathode materials to improve their cycle performance, such as B,42 F,165,179,180 Na91,97 Mg,114,161,181 Al,43,181,182 Si,181,183 S,184 Ca,185 Ti,164,181 V,181 Cr,161 Mn,186 Mo,90,98 Sn,187 Nb,148,170 Ga,181 Y,110 Zr,40,163,181 Ce,93 Al–Mg,162,188 Al–Fe,156 and Mg–Al–B 147. There are several mechanisms for improving the cycle performance: 1) Inactive elements can substitute the unstable elements (Ni and Li) in the Ni‐rich NCM system to hold the original structure;185,189 2) fixing the primary particles of cathode materials to relieve the evolution of cracks 42…”

Section: Service Life Of Ni‐rich Ncm For Libsmentioning

confidence: 99%

Ni‐Rich/Co‐Poor Layered Cathode for Automotive Li‐Ion Batteries: Promises and Challenges

Wang

Ding

Deng

et al. 2020

Advanced Energy Materials

293

218

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To pursue a higher energy density (>300 Wh kg−1 at the cell level) and a lower cost (<$125 kWh−1 expected at 2022) of Li‐ion batteries for making electric vehicles (EVs) long range and cost‐competitive with internal combustion engine vehicles, developing Ni‐rich/Co‐poor layered cathode (LiNi1−x−yCoxMnyO2, x+y ≤ 0.2) is currently one of the most promising strategies because high Ni content is beneficial to high capacity (>200 mAh g−1) while low Co content is favorable to minimize battery cost. Unfortunately, Ni‐rich cathodes suffer from limited structure stability and electrode/electrolyte interface stability in the charged state, leading to electrode degradation and poor cycling performance. To address these problems, various strategies have been employed such as doping, structural optimization design (e.g., core–shell structure, concentration‐gradient structure, etc.), and surface coating. In this review, five key aspects of Ni‐rich/Co‐poor layered cathode materials are explored: energy density, fast charge capability, service life including cycling life and calendar life, cost and element resources, and safety. This enables a comprehensive analysis of current research advances and challenges from the perspective of both academy and industry to help facilitate practical applications for EVs in the future.

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Yttrium modified Ni-rich LiNi0.8Co0.1Mn0.1O2 with enhanced electrochemical performance as high energy density cathode material at 4.5 V high voltage

Cited by 121 publications

References 51 publications

Enhancing surface oxygen retention through theory-guided doping selection in Li_1−xNiO₂ for next-generation lithium-ion batteries

Enhancing surface oxygen retention through theory-guided doping selection in Li_1−xNiO₂ for next-generation lithium-ion batteries

Fluorine-Doped LiNi0.8Mn0.1Co0.1O2 Cathode for High-Performance Lithium-Ion Batteries

Ni‐Rich/Co‐Poor Layered Cathode for Automotive Li‐Ion Batteries: Promises and Challenges

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Yttrium modified Ni-rich LiNi0.8Co0.1Mn0.1O2 with enhanced electrochemical performance as high energy density cathode material at 4.5 V high voltage

Cited by 121 publications

References 51 publications

Enhancing surface oxygen retention through theory-guided doping selection in Li1−xNiO2 for next-generation lithium-ion batteries

Enhancing surface oxygen retention through theory-guided doping selection in Li1−xNiO2 for next-generation lithium-ion batteries

Fluorine-Doped LiNi0.8Mn0.1Co0.1O2 Cathode for High-Performance Lithium-Ion Batteries

Ni‐Rich/Co‐Poor Layered Cathode for Automotive Li‐Ion Batteries: Promises and Challenges

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Product

Resources

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Yttrium modified Ni-rich LiNi0.8Co0.1Mn0.1O2 with enhanced electrochemical performance as high energy density cathode material at 4.5 V high voltage

Enhancing surface oxygen retention through theory-guided doping selection in Li_1−xNiO₂ for next-generation lithium-ion batteries

Enhancing surface oxygen retention through theory-guided doping selection in Li_1−xNiO₂ for next-generation lithium-ion batteries