Preparation and performance of 0.5Li2MnO3·0.5LiNi1/3Co1/3Mn1/3O2 with a fusiform porous micro-nano structure

Wang, Gang; Wang, Xianyou; Yi, Liling; Yu, Ruizhi; Liu, Meihong; Yang, Xiukang

doi:10.1039/c6ta06435c

Cited by 37 publications

(31 citation statements)

References 63 publications

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“…The intensity of the diffraction peak increases as the calcination temperature increases. At 650 °C, the separation of (006/102) and (108/110) diffraction peaks is not obvious, indicating that the synthesized LNCM material does not possess the obvious layered structure . As the calcination temperature increases, the separation of (006/102) and (108/110) diffraction peaks become more obviously.…”

Section: Resultsmentioning

confidence: 99%

Mg²⁺ Doped LiNi_1/3Co_1/3Mn_1/3O₂ Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

et al. 2020

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LiNi1/3Co1/3Mn1/3O2 ternary cathode is a dominant cathode material for lithium ion batteries due to its relatively stable structure. However, LiNi1/3Co1/3Mn1/3O2 still suffers from the poor rate capability and high cation disorder problems. Herein, the Mg–doped Li(Ni1/3Co1/3Mn1/3)0.99Mg0.01O2 cathode materials with hollow flake–like hierarchical fiber structures are successfully synthesized by a facile wet spinning method and the pressing pretreatment of precursor powders on the electrochemical performance is also systematically investigated. The diameter of the pre−synthesized hollow laminar nano−fibers are about 20 μm and approximately 50 nm in thickness with homogeneous primary nanoparticles (∼50 nm). Benefitting from the pillaring effects of inert Mg in the crystal structure and hollow laminar structure, the Li(Ni1/3Co1/3Mn1/3)0.99Mg0.01O2 cathodes deliver significantly improved electrochemical performance, achieving high stability discharge specific capacity 178.8 mA h g−1 with capacity retention of 88 % at 0.5 C (137.5 mA g−1) rate after 200 cycles. Moreover, it maintains a high rate capacity of 110 mA h g−1 even at a current density of 5 C. Based on this work, the conception of combining microstructure design and doping modification can facilitate the development of higher−performance Li−ion battery cathode materials.

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Section: Resultsmentioning

confidence: 99%

Mg²⁺ Doped LiNi_1/3Co_1/3Mn_1/3O₂ Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

et al. 2020

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“…The higher surface area of the FeF 3 • 0.33H 2 O/MWCNTs nanocom-posite is beneficial to a reversible conversion reaction, because it can provide more reaction sites for charge-transfer reactions and a high electrode/electrolyte contact area [62] . Accordingly, the unique mesoporous structure allows electrolyte to penetrate easily into the inner-outer surface, which results in a shorter transport path for Na + , thus enhancing the cycling performance [70,71] .…”

Section: Resultsmentioning

confidence: 99%

Spherical FeF3•0.33H2O/MWCNTs nanocomposite with mesoporous structure as cathode material of sodium ion battery

Wei

Wang

Liu

et al. 2018

Journal of Energy Chemistry

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“…The variations of specific surface area and pore size of all FeF 3 •0.33H 2 O submicrospheres under different PEG volumes (Figure 3I) can be obtained from the BET data in Figure 3H (P-20) and Supplementary Figures S3A-C (P-0, P-10, and P-30). The pore size can be calculated with the desorption isotherm (inset of Figure 3H and Supplementary Figures S3A-C (Wang et al, 2016).…”

Section: Structure Characterization and Analysismentioning

confidence: 99%

Control of Shape and Size in Iron Fluoride Porous Sub-Microspheres: Consequences for Steric Hindrance Interaction

Song

Zhao

et al. 2021

Front. Nanotechnol.

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Iron-based fluorides are promising alternates for advanced sodium-free battery cathodes due to their large theoretical capacity. However, the rational structural control on the iron-based fluorides toward high-performance batteries is still challenging. To this end, a controllable porous structure on FeF3·0.33H2O sub-microspheres is achieved by a polyethylene glycol (PEG)-assisted hydrothermal method via adjusting the volume of PEG-400. Experimental and molecular dynamic results verify that the formation of small amethyst-like sub-microspheres is mainly ascribed to the steric hindrance reaction of PEG-400, which makes it difficult for F− to combine with Fe3+ to form coordination bonds, and partially hinders the nucleation and growth of FeF3·0.33H2O nanospheres. As a sodium-free battery cathode, the FeF3·0.33H2O sub-microspheres with porous structure and smaller particle size exhibit excellent electrochemical performance with regard to cycle capacity and rate capability (a remaining capacity of 328 mAh g−1 and up to 95.3% retention rate when backs to 0.1 C after 60 cycles).

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Preparation and performance of 0.5Li₂MnO₃·0.5LiNi_1/3Co_1/3Mn_1/3O₂ with a fusiform porous micro-nano structure

Abstract: Fusiform porous micro-nano 0.5Li2MnO3·0.5LiNi1/3Co1/3Mn1/3O2 has been synthesised as a cathode material for high performance lithium ion batteries.

Cited by 37 publications

References 63 publications

Mg²⁺ Doped LiNi_1/3Co_1/3Mn_1/3O₂ Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

Mg²⁺ Doped LiNi_1/3Co_1/3Mn_1/3O₂ Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

Spherical FeF3•0.33H2O/MWCNTs nanocomposite with mesoporous structure as cathode material of sodium ion battery

Control of Shape and Size in Iron Fluoride Porous Sub-Microspheres: Consequences for Steric Hindrance Interaction

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Preparation and performance of 0.5Li2MnO3·0.5LiNi1/3Co1/3Mn1/3O2 with a fusiform porous micro-nano structure

Abstract: Fusiform porous micro-nano 0.5Li2MnO3·0.5LiNi1/3Co1/3Mn1/3O2 has been synthesised as a cathode material for high performance lithium ion batteries.

Cited by 37 publications

References 63 publications

Mg2+ Doped LiNi1/3Co1/3Mn1/3O2 Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

Mg2+ Doped LiNi1/3Co1/3Mn1/3O2 Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

Spherical FeF3•0.33H2O/MWCNTs nanocomposite with mesoporous structure as cathode material of sodium ion battery

Control of Shape and Size in Iron Fluoride Porous Sub-Microspheres: Consequences for Steric Hindrance Interaction

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Preparation and performance of 0.5Li₂MnO₃·0.5LiNi_1/3Co_1/3Mn_1/3O₂ with a fusiform porous micro-nano structure

Mg²⁺ Doped LiNi_1/3Co_1/3Mn_1/3O₂ Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries

Mg²⁺ Doped LiNi_1/3Co_1/3Mn_1/3O₂ Hollow Flake–Like Structures with Enhanced Performances Cathodes for Lithium–Ion Batteries