A Study into the Characteristics of Lithium Iron Fluorophosphate Cathode Materials for Lithium-Ion Batteries

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นันทรัตน์ สุขปัญญา


This research studies the structural and capacity fading on cycling of Lithium Iron Fluorophosphate (LiFePO4F) as a cathode material for lithium-ion batteries. LiFePO4F powders is synthesized by solid-state reaction and characterized by Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). From XRD results, the crystal structure change affected to capacity fading on cycling of battery. Cycling charge-discharge performance is carried at two rates: 0.5C and 2C. The corresponding initial discharge capacity are 129 mAh/g and 102 mAh/g at 0.5C and 2C rate, respectively. By the end of the 30th cycle, the discharge capacity decay to 114 mAh/g (88%) and 63 mAh/g (61%), respectively. Moreover, the electrochemical performance is examined by cyclic voltammetry (CV) for determine the reaction of cell voltage and Li-ion diffusivity. From CV results, the oxidation peak were found to be at 2.75V and the Li-ion diffusivity a value of 1.05x10-13 cm2/s


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สุขปัญญา น. (2014). A Study into the Characteristics of Lithium Iron Fluorophosphate Cathode Materials for Lithium-Ion Batteries. Journal of Energy and Environment Technology of Graduate School Siam Technology College, 1(2), 23–34. Retrieved from https://ph01.tci-thaijo.org/index.php/JEET/article/view/179546
Research Article


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