B-doped and La4NiLiO8-coated Ni-rich cathode with enhanced structural and interfacial stability for lithium-ion batteries

Li, Lingjun; Fu, Lizhi; Li, Miao; Wang, Chu; Zhao, Zixiang; Xie, Shiyu; Lin, Haichen; Wu, Xianwen; Liu, Haodong; Zhang, Li; Zhang, Qiaobao; Liu, Tan

doi:10.1016/j.jechem.2022.04.037

Cited by 145 publications

(48 citation statements)

References 36 publications

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“…[11,13,14] Currently, surface coating on NCM has been demonstrated as an effective strategy to suppress these side reactions, including electrolyte decomposition and TM dissolution on the NCM surface. [15,16] Various coating materials have been proposed to improve the electrochemical performance of NCM. Based on the property of coating materials, two types of coating materials are discussed here, including inactive coating substances without Li + storage capacity and the coating candidates with Li + /electron conductive capability.…”

Section: Surface Coatingmentioning

confidence: 99%

Recent progress on the modification of high nickel content NCM: Coating, doping, and single crystallization

Yan

Huang

Tong

et al. 2022

Interdisciplinary Materials

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High nickel content layered cathodes, represented by NCM (LiNi x Co y Mn z O 2 ,x + y + z = 1), are now widely employed in the market of electric vehicles, owing to their high energy density. With the gradual increase of nickel content and capacity, the issues on cycling life and safety become more serious. In this review, various strategies for improving the performance of high nickel NCM are summarized on the aspects of surface coating, ionic doping, and singlecrystal NCM. The coating strategy was separately described according to the physical property of coating species, including inert material coating, Li +conductor coating, electronic conductor coating, and mixed conductor coating. These coating species help to suppress the interfacial oxidation of electrolytes by NCM, improving the cycling life and safety. The elemental doping in the crystal lattice of NCM is then presented in the aspects of cation, anion, and mixed-ion doping, which are beneficial to stabilize the layered structure during charge-discharge and so promote the electrochemical performance. In quite recent years, the strategy of single-crystal NCM was demonstrated to be a promising pathway, owing to the dramatically reduced surface area and grain boundary. Finally, the remaining unsolved challenges and future strategies for further development of NCM cathode materials are outlined.

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Section: Surface Coatingmentioning

confidence: 99%

Recent progress on the modification of high nickel content NCM: Coating, doping, and single crystallization

Yan

Huang

Tong

et al. 2022

Interdisciplinary Materials

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“…Depletion of the petroleum resources and degradation of the natural environment have encouraged the development of new renewable energy systems in recent years. − It is urgently required to realize high-current fast-charging energy storage systems for the purpose of meeting the advancement of hand-held rechargeable devices and new energy electronic mobiles . Sodium-ion batteries (SIBs) have gained plenty of interest owing to rich sodium metal resources and the cost-effective technology, which are deemed as the most prospective substitutes for lithium-ion batteries (LIBs). − However, traditional commercial graphite is not an ideal anode material for SIBs, on account of its weak ionic bond and the larger radius of Na + (1.02 Å versus 0.76 Å for Li + ). , Additionally, the larger size of Na + results in a vast volume change, slow reaction kinetics, and even the structural collapse during cyclic charge and discharge, which brings on the decaying sodium storage capacity and unsatisfactory rate performance .…”

Section: Introductionmentioning

confidence: 99%

1T–2H MoS₂/Ti₃C₂ MXene Heterostructure with High-Rate and High-Capacity Performance for Sodium-Ion Batteries

et al. 2022

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Despite the outstanding theoretical capacities of two-dimensional (2D) molybdenum sulfide (MoS2) with low costs, its low conductivity and easy agglomeration greatly impede the business application as anode materials. The heterostructures between 2D MoS2 and Ti3C2 MXene are able to combine the collective superiorities of MoS2 and Ti3C2, thus greatly ameliorating the electrical conductivity and rate capacity through synergistic effects. Herein, we design a simple intercalation–sulfidation strategy for the construction of the TH MoS2/Ti3C2 heterostructures with a compact stacking lamellar structure and investigate the electrochemical sodium storage properties of the composite. In the architecture, fallen leaf-like MoS2 nanosheets with a mixed-phase crystal containing 1T and 2H phases grow tightly on the surface and interlayer of Ti3C2 matrixes. The expanded layer spacing of Ti3C2 as a result of MoS2 insertion can greatly accelerate electronic/sodium ion transport. Meanwhile, 2D Ti3C2 can serve as a strong mechanical support for the composite electrode to provide a buffer space for volume expansion and avoid structural collapse during cycles. Benefiting from these structural advantages, the TH MoS2/Ti3C2 anode reveals higher sodium storage capacity of 743.6 mAh g–1 than bare MoS2 (579.4 mAh g–1) at 0.2 A g–1. Furthermore, the anode exhibits significantly improved battery rate performance with a high sodium storage capacity of 653.3, 539.1, 512.1, 488.7, 439.3, and 586.7 mAh g–1 at 0.2, 0.5, 1, 2, 5, and 0.2 A g–1. Our study provides a unique synthesis route to construct layered heterostructure composites by artificial stacking of different types of 2D materials, which are considered as highly promising electrode materials for sodium-ion batteries (SIBs).

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“…15−18 Among them, surface coating can optimize the electrode/electrolyte interface to inhibit surface side reactions and structural collapse, which has a significant effect on improving the electrochemical performance at high voltage. 19 Fluoride as a coating layer can effectively improve the electrochemical performance of LCO under high voltage. AlF 3 20 and LiF 5,21 can be applied as coating modification materials to enhance the high-voltage stability of LCO.…”

Section: Introductionmentioning

confidence: 99%

Enhanced 4.7 V Electrochemical Performance of the LiCoO₂ Cathode via a Fluoride and LiCo_1–xAl_xO₂ Composite Coating

et al. 2022

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Surface coating is an effective way to suppress the structural collapse and surface side reactions of LiCoO 2 (LCO) at high voltage. Herein, KAlF 4 is used as the raw material for coating modification and combining the wet chemical method and high-temperature solid-phase method to form a dense LiF, KF, and LiCo 1−x Al x O 2 composite coating layer on the surface of LCO. The fluoride composite coating layer can stabilize the surface of the material, and the solid solution phase can accelerate the transport of Li + while stabilizing the surface. The synergistic effect of the composite coating phase has a positive effect on mitigating the surface side reactions and structural collapse of LCO at high cutoff voltages above 4.5 V. The modified sample had a first discharge specific capacity of 216.3 mAh/g at 0.5 C in the high-voltage range of 3.0−4.7 V and still had capacity retention of up to 60.4% after 200 cycles, while only 5.8% of unmodified LCO samples remained after 160 cycles. The improved electrochemical performance is attributed to the stabilized surface and phase structure, improved lithium ion diffusion coefficient induced by composite coating as evidenced by electrochemical impedance spectroscopy, cyclic voltammetry, and scanning electron microscopy.

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B-doped and La4NiLiO8-coated Ni-rich cathode with enhanced structural and interfacial stability for lithium-ion batteries

Cited by 145 publications

References 36 publications

Recent progress on the modification of high nickel content NCM: Coating, doping, and single crystallization

Recent progress on the modification of high nickel content NCM: Coating, doping, and single crystallization

1T–2H MoS₂/Ti₃C₂ MXene Heterostructure with High-Rate and High-Capacity Performance for Sodium-Ion Batteries

Enhanced 4.7 V Electrochemical Performance of the LiCoO₂ Cathode via a Fluoride and LiCo_1–xAl_xO₂ Composite Coating

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B-doped and La4NiLiO8-coated Ni-rich cathode with enhanced structural and interfacial stability for lithium-ion batteries

Cited by 145 publications

References 36 publications

Recent progress on the modification of high nickel content NCM: Coating, doping, and single crystallization

Recent progress on the modification of high nickel content NCM: Coating, doping, and single crystallization

1T–2H MoS2/Ti3C2 MXene Heterostructure with High-Rate and High-Capacity Performance for Sodium-Ion Batteries

Enhanced 4.7 V Electrochemical Performance of the LiCoO2 Cathode via a Fluoride and LiCo1–xAlxO2 Composite Coating

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Product

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1T–2H MoS₂/Ti₃C₂ MXene Heterostructure with High-Rate and High-Capacity Performance for Sodium-Ion Batteries

Enhanced 4.7 V Electrochemical Performance of the LiCoO₂ Cathode via a Fluoride and LiCo_1–xAl_xO₂ Composite Coating