Compositional core-shell design by nickel leaching on the surface of Ni-rich cathode materials for advanced high-energy and safe rechargeable batteries

Lee, Yongho; Kim, Hyeongwoo; Yim, Taeeun; Lee, Kwan Young; Choi, Wonchang

doi:10.1016/j.jpowsour.2018.08.006

Cited by 46 publications

(29 citation statements)

References 39 publications

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“…However, the cycling performance still needs to be improved, for example, by using various approaches such as change structure, doping, coatings and additives for the organic electrolyte, which can improve the surface of LiNCM materials with Ni content over 80 %. [7,44,47,48]…”

Section: Resultsmentioning

confidence: 99%

“…The improved rate capability for the LiNCM sample with 80 % Ni content can also be attributed to the enhanced stabilized structure and lower Ni content in the LiNCM materials. However, the cycling performance still needs to be improved, for example, by using various approaches such as change structure, doping, coatings and additives for the organic electrolyte, which can improve the surface of LiNCM materials with Ni content over 80 % [7,44,47,48] …”

Section: Resultsmentioning

confidence: 99%

“…[5,6] Therefore, many LIB companies as well as research institutions have been trying to provide high energy density, safe and environmentally friendly materials for use in portable devices and electric vehicles (EVs). [7][8][9] Furthermore, various automobile companies have been focused on R&D of LIBs with high energy density cathode materials to increase travel distance and decrease battery cost. [10,11] Therefore, the R&D approaches for current battery technology for LIBs will require the development of new, alternative and necessary engineering controls to support LIBs performance.…”

Section: Introductionmentioning

confidence: 99%

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Ni‐Rich Layered Cathode Materials by a Mechanochemical Method for High‐Energy Lithium‐Ion Batteries

et al. 2020

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Ni‐rich cathode materials are attractive for use in high energy density lithium‐ion batteries due to low Co, high specific capacity and low cost; however, due to the poor cycling stability of materials with high Ni content of over 80 %, their large‐scale application in electric vehicles is limited. Furthermore, for industrial applications, it is important to simplify the synthetic procedures to reduce the manufacturing cost of the cathode material. A mechanochemical method is introduced for a combination of carbonate and hydroxide starting materials with Ni content of over 80, 85, and 90 %. These precursor materials are stable in air and are easy to use for the synthesis of LiNixCoyMnzO2 materials by solid state reaction. The crystalline structures and surface morphologies of the obtained mixed precursors and LiNixCoyMnzO2 powders are characterized using X‐ray diffraction analysis and field scanning electron microscopy with energy dispersive X‐Ray spectroscopy. The electrochemical performance is evaluated by repeat charge‐discharge cycling and measurement of the rate capability for various potential ranges from 3.0 to various high cut‐off potentials of 4.2, 4.3 and 4.4 V vs. Li/Li+. The results suggest that the whole process is very simple and similar to that used in the production of commercial LiNixCoyMnzO2, with no additional equipment needed in the application of this synthesis method for industrial purposes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ni‐Rich Layered Cathode Materials by a Mechanochemical Method for High‐Energy Lithium‐Ion Batteries

et al. 2020

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“…To improve the energy density of cathode materials, Ni‐rich layered LiNi x Co y Mn 1‐ x ‐ y O 2 (LNCMO) cathode materials (x≥0.60) have been extensively researched and developed . Generally speaking, Ni element brings the high‐capacity and lower cost for cathode materials, Co element is mainly responsible for the suppression of Ni 2+ /Li + cation disorder and the improvement of electronic conductivity, while Mn element stabilizes the crystal structure and reduces the cost …”

Section: Introductionmentioning

confidence: 99%

“…[14] Generally speaking, Ni element brings the high-capacity and lower cost for cathode materials, Co element is mainly responsible for the suppression of Ni 2 + /Li + cation disorder and the improvement of electronic conductivity, while Mn element stabilizes the crystal structure and reduces the cost. [15,16] Currently, numerous studies on Ni-rich LNCMO materials mainly focus on the material modification, including doping with other elements, [17,18] coating with compounds, [19,20] synthesis of spherical concentration gradient or core-shell structure. [21][22][23][24] The purpose of these studies is to improve the cycle performance and rate capability, as Ni-rich LNCMO materials suffer from its rapidly declined cycle performance and unsatisfied rate capability, which are mainly caused by Ni 2 + /Li + cation disorder, side reactions with electrolytes, and crystal structure change in the process of charge/discharge.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Tunable Olive‐Like Ni_0.8Co_0.1Mn_0.1CO₃ and its Transformation to LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Materials for Li‐Ion Batteries

et al. 2019

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Uniform olive‐like Ni0.8Co0.1Mn0.1CO3 carbonate precursors were successfully synthesized under hydrothermal conditions. Powder X‐ray diffraction, field emission scanning electron microscopy, optical microscopy, and inductively coupled plasma optical emission spectroscopy revealed that crystal size and elemental contents of carbonate precursors could be slightly tuned by regulating the molar ratio of urea and transition metal ions, moreover, a synergetic crystal evolution mechanism involving Ostwald ripening and crystal etching for the formation of olive‐like carbonate precursors was put forward for the first time. The improvement in temperature facilitated the increment in size of primary particles of oxides transformed from carbonate precursors. Vermiform LiNi0.8Co0.1Mn0.1O2 cathode materials transformed from olive‐like carbonate precursors exhibited high discharge capacity of 193.4 mAh g−1 at 0.2 C, and capacity retention of 85.4 % at 1 C after 100 cycles. Charge transfer impedance (Rct) and diffusion coefficient of lithium ion (DLi+) revealed the electrochemical properties of cathode materials.

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Nickel‐Based Materials for Advanced Rechargeable Batteries

Zhou

Guo

Zhang

et al. 2021

Adv Funct Materials

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The rapid development of electrochemical energy storage (EES) devices requires multi‐functional materials. Nickel (Ni)‐based materials are regarded as promising candidates for EES devices owing to their unique performance characteristics, low cost, abundance, and environmental friendliness. This review summarizes the scientific advances of Ni‐based materials for rechargeable batteries since 2018, including lithium‐ion/sodium‐ion/potassium‐ion batteries (LIBs/SIBs/PIBs), lithium–sulfur batteries (LSBs), Ni‐based aqueous batteries, and metal–air batteries (MABs). The Ni‐based materials are mainly classified by the various roles of anodes and cathodes for LIBs and SIBs, cathode hosts and separators for LSBs, cathodes for Ni‐based aqueous batteries, and catalysts for MABs, focusing on the relationship between the compositions, structures, and electrochemical performance. Finally, the challenges and prospects of Ni‐based materials for rechargeable batteries are briefly discussed.

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Compositional core-shell design by nickel leaching on the surface of Ni-rich cathode materials for advanced high-energy and safe rechargeable batteries

Cited by 46 publications

References 39 publications

Ni‐Rich Layered Cathode Materials by a Mechanochemical Method for High‐Energy Lithium‐Ion Batteries

Ni‐Rich Layered Cathode Materials by a Mechanochemical Method for High‐Energy Lithium‐Ion Batteries

Hydrothermal Synthesis of Tunable Olive‐Like Ni_0.8Co_0.1Mn_0.1CO₃ and its Transformation to LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Materials for Li‐Ion Batteries

Nickel‐Based Materials for Advanced Rechargeable Batteries

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Compositional core-shell design by nickel leaching on the surface of Ni-rich cathode materials for advanced high-energy and safe rechargeable batteries

Cited by 46 publications

References 39 publications

Ni‐Rich Layered Cathode Materials by a Mechanochemical Method for High‐Energy Lithium‐Ion Batteries

Ni‐Rich Layered Cathode Materials by a Mechanochemical Method for High‐Energy Lithium‐Ion Batteries

Hydrothermal Synthesis of Tunable Olive‐Like Ni0.8Co0.1Mn0.1CO3 and its Transformation to LiNi0.8Co0.1Mn0.1O2 Cathode Materials for Li‐Ion Batteries

Nickel‐Based Materials for Advanced Rechargeable Batteries

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Hydrothermal Synthesis of Tunable Olive‐Like Ni_0.8Co_0.1Mn_0.1CO₃ and its Transformation to LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Materials for Li‐Ion Batteries