Template-engaged synthesis of spinel-layered Li1.5MnTiO4+ nanorods as a cathode material for Li-ion batteries

Vu, Ngoc Hung; Unithrattil, Sanjith; Hoang, Van Hien; Chun, Sang‐Eun; Im, Won Bin

doi:10.1016/j.jpowsour.2017.04.055

Cited by 9 publications

(3 citation statements)

References 24 publications

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“…The Rietveld refinement shows that the degree of substitution of Li/Mn in the octahedra is about 5%. The cation disorder can improve the electrochemical performance of the cathode [17][18][19]. The lattice parameter of o-LiMnO 2 is slightly smaller than that in literature [20].…”

Section: Resultsmentioning

confidence: 89%

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Dao

et al. 2021

Journal of Nanomaterials

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Herein, we reported the composite structure of LiMnO2 and Li2MnO3 as a low-cost and environmentally benign cathode material. This composite with the main phase of LiMnO2 (90%) was synthesized by hydrothermal method at 220°C from LiOH and Mn(CH3COO)2 precursors. The obtained nanosized LiMnO2-LiMnO3 cathode material exhibits a high capacity of 265 mAh g-1 at C/10. The incorporation of Li2MnO3 into the LiMnO2 phase could stabilize the structure, leading to the improved cycle stability of the cathode. The capacity retention of the cathode was 93% after 80 cycles at C/2. Our results facilitate a potential strategy for developing high-performance cathode materials based on the Li-Mn-O system.

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Section: Resultsmentioning

confidence: 89%

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Dao

et al. 2021

Journal of Nanomaterials

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“…The layered peaks are overlapped by the spinel peaks because they have similar cubic closepacked oxygen sites. 3,23 However, the unique superlattice peak at 20.5°o f (020) L plane (where L stands for layered) confirms the presence of a layered phase. Moreover, the peak at 65.5°which is assigned to the (060) L plane of the Li 2 MnO 3 phase, also appears in all of the samples.…”

Section: Resultsmentioning

confidence: 96%

Effects of Fluorine Doping on Electrochemical Performance of Spinel-Layered Li₃Mn₃O_7.5-_xF_x as Cathode Materials for Li-Ion Batteries

Huu

et al. 2019

J. Electrochem. Soc.

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A simple synthesis procedure for solid-state reactions at an intermediate temperature ( 500°C) is applied to synthesize F-doped spinel-layered 0.5Li 2 MnO 3 •0.5Li 4 Mn 5 O 12 (Li 3 Mn 3 O 7.5-x F x with x = 0, 0.05, 0.1, and 0.2). The F-doping does not affect the crystal structure or the morphology of the pristine sample. However, F-doping increases the Mn 3+ content, leading to an improved electronic conductivity and a lower charge-transfer resistance. In addition, F-doping also reduces the difference of voltage between the oxidation and reduction processes, and enhances the Li + diffusion coefficient (with a maximum four times higher than that of the pristine sample). Consequently, the capacity and rate capability of the cathode are improved by F-doping (the x = 0.1 sample can provide a high capacity of 300 mAh g −1 at C/10).

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“…Moreover, the spinel phase can stabilize the layered component at high potentials and vice versa, improving the cathode cycling stability. [10,[13][14][15][16][17] Finally, the morphology and size of particles significantly influence the electrochemical properties of cathode materials. Nanometer-sized materials will have a large surface area, increasing contact with the electrolyte, thereby reducing the charge transfer resistance.…”

Section: Introductionmentioning

confidence: 99%

Spinel‐layered Li₂MnTiO₄_+z cathode material for Li‐ion batteries prepared by a sol‐gel method

Hung,

Van‐Duong,

Trang

2020

Vietnam Journal of Chemistry

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Herein, the sol‐gel method is conducted to synthesize the spinel‐layered Li2MnTiO4+z (0.5LiMnTiO4•0.5Li2Mn0.5Ti0.5O3) nanoparticles as a cathode material for Li‐ion batteries. The structural and electrochemical properties of the material are investigated by means of X‐ray diffraction, scanning electron microscopy, electrochemical impedance spectroscopy, and charge‐discharge tests. The obtained sample shows a high capacity of 200 mAh g‐1 with a capacity retention of 90 % after 60 cycles at C/5.

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Template-engaged synthesis of spinel-layered Li1.5MnTiO4+ nanorods as a cathode material for Li-ion batteries

Cited by 9 publications

References 24 publications

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Effects of Fluorine Doping on Electrochemical Performance of Spinel-Layered Li₃Mn₃O_7.5-_xF_x as Cathode Materials for Li-Ion Batteries

Spinel‐layered Li₂MnTiO₄_+z cathode material for Li‐ion batteries prepared by a sol‐gel method

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Template-engaged synthesis of spinel-layered Li1.5MnTiO4+ nanorods as a cathode material for Li-ion batteries

Cited by 9 publications

References 24 publications

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

Effects of Fluorine Doping on Electrochemical Performance of Spinel-Layered Li3Mn3O7.5-xFx as Cathode Materials for Li-Ion Batteries

Spinel‐layered Li2MnTiO4+z cathode material for Li‐ion batteries prepared by a sol‐gel method

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Effects of Fluorine Doping on Electrochemical Performance of Spinel-Layered Li₃Mn₃O_7.5-_xF_x as Cathode Materials for Li-Ion Batteries

Spinel‐layered Li₂MnTiO₄_+z cathode material for Li‐ion batteries prepared by a sol‐gel method