Study on Preparation of Cathode Material of Lithium Iron Phosphate Battery by Self-Craning Thermal Method

© 2024 by the Authors. Licensee Whioce Publishing, Singapore. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ )

Download PDF

Cite

XML

HTML

Abstract

The cathode material of carbon-coated lithium iron phosphate (LiFePO₄/C) lithium-ion battery was synthesized by a self-winding thermal method. The material was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The electrochemical properties of LiFePO₄/C materials were measured by the constant current charge-discharge method and cyclic voltammetry. The results showed that the LiFePO₄/C material prepared by the self-propagating heat method has a typical olivine crystal structure, and the product had fine grains and good electrochemical properties. The optimal sintering temperature is 700 ℃, the sintering time is 24 h, the particle size of the lithium iron phosphate material is about 300 nm, and the maximum discharge capacity is 121 mAh/g at 0.1 C rate.

References

Feng Z, Xiao Y, Zou L, 2019, Research Progress on Preparation of Lithium Iron Phosphate. Jiangxi Chemical Industry, 2019(01): 42–46.

Pan M, Zhou Z, 2012, Electrochemical Performance of LiFePO4/C Doped with F Synthesized by Carbothermal Reduction Method Using NH4F as Dopant. Journal of Solid State Electrochemistry, 16(4): 1615–1621.

Ai Z, Tian J, Wu J, et al., 2024, Research Progress of Lithium Iron Phosphate Cathode Materials for High Temperature Solid Phase Repair. Chinese Journal of Power Technology, 48(1): 9–25.

Pan M, Zhou Z, 2011, Carbon-rich Grain Surface of LiFePO4 Enhancing its rate Capability. Material Letter, 65(7): 1131.

Ni JF, Zhou HH, Chen JT, 2006, Molten Salt Synthesis and Electrochemical Properties of Spherical LiFePO4 Particles. J Power Sources, 2006(159): 307–311.

Guo J, Jia S, 2020, Synthesis and Properties of Lithium Iron Phosphate by Hydrothermal Method. Inorganic Chemicals Industry, 52(06): 36–40.

Wang H, Chen F, Gong W, 2019, Research on Heat Treatment Process of Preparation of Lithium Iron Phosphate by Co-Precipitation. Nonferrous Metals (Smelting Part), 2019(11): 75–80.

Park KS, Son JT, Chung HT, et al., 2003, Synthesis of LiFePO4 by Co-Precipitation and Microwave Heating. Electrochemistry Communications, 5(10): 839–842.

Yang MR, Teng TH, Wu SH, 2006, LiFePO4/carbon Cathode Materials Prepared by Ultrasonic Spray Pyrolysis. Journal of Power Sources, 159(1): 307–311.

Zhang Y, Zhang R, Xu F, et al., 2019, Surface Structures, Crystal Orientation, and Electrochemical Behavior of Modified LiFePO4 by Novel Strategies. Energy Technology, 7(10): 1900385, 1–8. https://doi.org/10.1002/ente.201900385

Cao C, Zhou T, Li W, et al., 2017, Synthesis of AlN Whiskers by Self-Propagating Combustion and its Growth Mechanism. Journal of Jiangxi Science and Technology Normal University, 2017(06): 13–16.

Li H, Chen X, Zhang P, 2018, Synthesis of LiFePO4 Nanocathode Material by Self-Spreading Combustion. Metal Functional Materials, 25(05): 1–6.

Zhang R, Xiong Z, Li J, et al., 2019, Preparation and Properties of LiFePO_4/C Cathode Materials by High Temperature Solid Phase Method. Journal of Guizhou University (Natural Science Edition), 36(03): 57–61.

Li L, Dong G, Li Z, et al., 2019, Effect of Solid-Phase Reaction Conditions on Electrochemical Performance of Lithium Iron Phosphate. Powder Metallurgy Technology, 37(05): 332–338.

Raj H, Rani S, Sil A, 2018, Antisite Defects in Sol-Gel-Synthesized LiFePO4 at Higher Temperature: Effect on Lithium-Ion Diffusion. ChemElectroChem, 5: 3525–3532.

Previous article in this issue

Next article in this issue