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Volume 10
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Article

Improving LiFe0.4Mn0.6PO4 Nanoplate Performance by a Dual Modification Strategy toward the Practical Application of Li-Ion Batteries

by
Mingfeng Tan
1,
Helei Wei
1,*,
Qi Li
1,
Zhipeng Yu
2,
Qiang Zhang
1,
Mingzhi Lin
1 and
Bo Lin
1,*
1
Global R&D Center, Guangxi Liugong Machinery Co., Ltd., Liuzhou 545007, China
2
International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, 4715-330 Braga, Portugal
*
Authors to whom correspondence should be addressed.
Batteries 2024, 10(8), 272; https://doi.org/10.3390/batteries10080272
Submission received: 2 July 2024 / Revised: 17 July 2024 / Accepted: 24 July 2024 / Published: 29 July 2024
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Abstract

A novel composite consisting of fluorine-doped carbon and graphene double-coated LiMn0.6Fe0.4PO4 (LMFP) nanorods was synthesized via a facile low-temperature solvothermal method that employs a hybrid glucose and polyvinylidene fluoride as carbon and fluorine sources. As revealed by physicochemical characterization, F-doped carbon coating and graphene form a ‘point-to-surface’ conductive network, facilitating rapid electron transport and mitigating electrochemical polarization. Furthermore, the uniform thickness of the F-doped carbon coating alters the growth of nanoparticles and prevents direct contact between the material and the electrolyte, thereby enhancing structural stability. The strongly electronegative F− can inhibit the structural changes in LMFP during charge/discharge, thus reducing the Jahn–Teller effect of Mn3+. The distinctive architecture of the LMFP/C-F/G cathode material exhibits excellent electrochemical properties, exhibiting an initial discharge capacity of 163.1 mAh g−1 at 0.1 C and a constant Coulombic efficiency of 99.7% over 100 cycles. Notably, the LMFP/C-F/G cathode material achieves an impressive energy density of 607.6 Wh kg−1, surpassing that of commercial counterparts. Moreover, it delivers a reversible capacity of 90.3 mAh g−1 at a high current rate of 5 C. The high-capacity capability and energy density of the prepared materials give them great potential for use in next-generation lithium-ion batteries.
Keywords: fluorine-doped carbon; graphene; lithium manganese phosphate; uniform coating; li-ion battery fluorine-doped carbon; graphene; lithium manganese phosphate; uniform coating; li-ion battery

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MDPI and ACS Style

Tan, M.; Wei, H.; Li, Q.; Yu, Z.; Zhang, Q.; Lin, M.; Lin, B. Improving LiFe0.4Mn0.6PO4 Nanoplate Performance by a Dual Modification Strategy toward the Practical Application of Li-Ion Batteries. Batteries 2024, 10, 272. https://doi.org/10.3390/batteries10080272

AMA Style

Tan M, Wei H, Li Q, Yu Z, Zhang Q, Lin M, Lin B. Improving LiFe0.4Mn0.6PO4 Nanoplate Performance by a Dual Modification Strategy toward the Practical Application of Li-Ion Batteries. Batteries. 2024; 10(8):272. https://doi.org/10.3390/batteries10080272

Chicago/Turabian Style

Tan, Mingfeng, Helei Wei, Qi Li, Zhipeng Yu, Qiang Zhang, Mingzhi Lin, and Bo Lin. 2024. "Improving LiFe0.4Mn0.6PO4 Nanoplate Performance by a Dual Modification Strategy toward the Practical Application of Li-Ion Batteries" Batteries 10, no. 8: 272. https://doi.org/10.3390/batteries10080272

APA Style

Tan, M., Wei, H., Li, Q., Yu, Z., Zhang, Q., Lin, M., & Lin, B. (2024). Improving LiFe0.4Mn0.6PO4 Nanoplate Performance by a Dual Modification Strategy toward the Practical Application of Li-Ion Batteries. Batteries, 10(8), 272. https://doi.org/10.3390/batteries10080272

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