Microwave assisted preparation of LiFePO4/C coated LiMn1.6Ni0.4O4 for Li-ion batteries with superior electrochemical properties

Vásquez, F.A.; Rosero-Navarro, Nataly Carolina; Jalem, Randy; Miura, Akira; Goto, Y.; Tateyama, Yoshitaka; Calderón, Jorge A.; Tadanaga, Kiyoharu

doi:10.1016/j.apmt.2022.101697

Cited by 1 publication

(3 citation statements)

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“…It indicates that the in situ-coated modification significantly enhances the specific capacity of the material. Among them, the increase in the capacity of H-LMR@10CF materials mainly depends on the modifying effect of LiF and C. 25,57 The constant-current discharge capacitances at different rates are shown in Figure 5b. It can be seen from the figure that the capacitance of the modified material at different magnifications is higher than that of the LMR material.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…In addition to morphology control that can suppress surface-side reactions and prevent HF erosion, there are several other solutions to this problem, among which the embedding scheme is practical and effective. , For example, Modifying Carbon − may improve performance by increasing the electronic conductivity and reducing HF corrosion. However, excessive coating can affect the release of electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

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Bifunctional Modification of CF_x and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

Tang,

Liu,

et al. 2023

Energy Fuels

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Lithium-and manganese-rich layered cathodes (LMRs) have been widely investigated as promising cathode materials with high energy density and excellent electrochemical properties for Li-ion batteries. However, the practical application of LMRs has been greatly hampered by their structural collapse trend due to severe surface phase transitions, surface-side reactions, HF erosion, and the oxygen generated during the charging and discharging process. In this work, a collaborative solution for structural and surface modification was proposed to address the above issues, and an innovative in situ coating LMR was proposed. A semihollow porous microsphere Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 (H-LMR) was synthesized by combining a template-free rapid coprecipitation method with a high-temperature solid-state sintering method. LiF and C were generated using CF x in the first cycle of the battery, completing the in situ coating modification process. The collaborative solution mitigates structural expansion during the charging and discharging process while providing bidirectional ion channels as well as a suitable spatial basis for in situ-coated modification. This unique in situ-coated modification process greatly reduces the occurrence of surface-side reactions, reduces HF erosion, and further improves ionic conductivity. In addition, the synergistic effect further improves the specific discharge, specific capacity, and cycling stability of the material, resulting in a higher specific capacitance (313.1 mAh•g −1 ) at 0.1C, a good rate yield (182.7 mAh•g −1 at 2C), and a long cycle life (90.96% capacity retention after 100 cycles at 0.5C). The proposed scheme provides a new direction and a better path for high-energy-density lithium-ion battery materials in the future.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bifunctional Modification of CF_x and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

Tang,

Liu,

et al. 2023

Energy Fuels

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Microwave assisted preparation of LiFePO4/C coated LiMn1.6Ni0.4O4 for Li-ion batteries with superior electrochemical properties

Cited by 1 publication

References 37 publications

Bifunctional Modification of CF_x and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

Bifunctional Modification of CF_x and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

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Microwave assisted preparation of LiFePO4/C coated LiMn1.6Ni0.4O4 for Li-ion batteries with superior electrochemical properties

Cited by 1 publication

References 37 publications

Bifunctional Modification of CFx and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

Bifunctional Modification of CFx and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

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Product

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Bifunctional Modification of CF_x and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes

Bifunctional Modification of CF_x and Semihollow and Multiaperture Microsphere Structures for Lithium- and Manganese-Rich Layered Cathodes