Formation kinetics of sol-gel derived LiFePO4 olivine analyzed by reliable non-isothermal approach
Source abstract
Abstract
© 2022 Elsevier Ltd and Techna Group S.r.l. The formation kinetics of LiFePO4 Olivine synthesized through sol-gel route has been studied by non-isothermal approach. LiFePO4 precursors were prepared by mixing lithium dihydrogen phosphate (LiH2PO4) and iron (III) citrate (C6H5FeO7) and subsequently calcined in an Argon atmosphere at temperatures ranged from of 300–900 °C to form LiFePO4 products. Thermal behaviors of calcination process were analyzed by thermogravimetry (TGA) and differential scanning calorimetry (DSC) simultaneously, while the mineralogical properties of LiFePO4 were characterized using X-ray diffractometer (XRD). The kinetic parameters were determined by Ozawa–Flynn–Wall (OFW), Kissinger, and Kissinger-Akahira-Sunose (KAS) methods, and the reaction mechanism model was evaluated by Coats–Redfern approach. The results indicated that the reaction model of LiFePO4 formation agreed with the three-dimensional diffusion mechanism. The temperature had an essential role in the synthesis of LiFePO4. The optimum calcination temperature was 700 °C where this condition produced LiFePO4 Olivine with high degree of crystallinity, better lattice parameters and phase purity.
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Research context
OpenAlex topics: Thermal and Kinetic Analysis · Extraction and Separation Processes · Advancements in Battery Materials
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References (41)
Show source-provided references
1. Ultrasonic-assisted synthesis of LiFePO4/C composite for lithium-ion batteries using iron powder as the reactant10.1016/j.jallcom.2018.09.270 ↗
2. Impact of pH on preparation of LiFePO 4@ C cathode materials by a sol-gel route assisted by biomineralization10.1007/s11581-019-03273-1 ↗
3. Controllable synthesis of LiFePO4 microrods and its superior electrochemical performance10.1016/j.matlet.2020.128737 ↗
4. X-ray diffraction study of LiFePO4 synthesized by hydrothermal method10.1039/c3ra41678j ↗
5. Non-isothermal kinetics study on synthesis of LiFePO4 via carbothermal reduction method10.1016/j.tca.2013.06.014 ↗
6. A novel synthesis and characterization of LiFePO4 and LiFePO4/C as a cathode material for lithium-ion battery10.1016/j.jpowsour.2013.07.077 ↗
7. Effect of calcination temperature on the structure and catalytic performance of copper–ceria mixed oxide catalysts in phenol hydroxylation10.1039/C7RA00734E ↗
8. Kinetic study on low-temperature synthesis of LiFePO4 via solid-state reaction10.1016/j.jpowsour.2005.09.005 ↗
9. Kinetics of synthesis olivine LiFePO4 by using a precipitated-sintering method10.1016/j.jallcom.2007.12.005 ↗
10. Nanoscale TiO2 films and their application in remediation of organic pollutants10.1016/j.ccr.2015.06.011 ↗
11. 3D porous LiFePO4/graphene hybrid cathodes with enhanced performance for Li-ion batteries10.1016/j.jpowsour.2012.02.032 ↗
12. Hydrothermal preparation and performance of LiFePO4 by using Li3PO4 recovered from spent cathode scraps as Li source10.1016/j.wasman.2018.05.029 ↗
13. ICTAC Kinetics Committee recommendations for collecting experimental thermal analysis data for kinetic computations10.1016/j.tca.2014.05.036 ↗
14. Thermogravimetric analysis and kinetic study of biochemically pretreated printed Circuit board wastes10.1007/s12649-013-9242-y ↗
15. Potassium titanate whiskers on the walls of cordierite honeycomb ceramics for soot catalytic combustion10.1016/j.ceramint.2021.09.023 ↗
16. ICTAC Kinetics Committee recommendations for performing kinetic computations on thermal analysis data10.1016/j.tca.2011.03.034 ↗
17. Mechanism and kinetic studies on the synthesis of LiFePO 4 via solid-state reactions10.1039/c3ce41063c ↗
18. Joint Convention of four electrical institutes, res. Report
19. A quick, direct method for the determination of activation energy from thermogravimetric data10.1002/pol.1966.110040504 ↗
20. Variation of peak temperature with heating rate in differential thermal analysis10.6028/jres.057.026 ↗
21. Reaction kinetics in differential thermal analysis10.1021/ac60131a045 ↗
22. A new method of analyzing thermogravimetric data10.1246/bcsj.38.1881 ↗
23. Insight into pyrolysis kinetics of lignocellulosic biomass: isoconversional kinetic analysis by the modified friedman method10.1021/acs.energyfuels.0c00275 ↗
24. Calculation of kinetic parameters of the thermal decomposition of residual waste of coniferous species: Cedrus Deodara
25. Integral, differential and advanced isoconversional methods: complex mechanisms and isothermal predicted conversion–time curves10.1016/j.chemolab.2009.02.002 ↗
26. Improved iterative version of the Coats-Redfern method to evaluate non-isothermal kinetic parameters10.1023/A:1010125132669 ↗
27. Brown · 1998 · vol. 1
28. Calcination kinetics of ammonium pentaborate using the Coats− redfern and genetic algorithm method by thermal analysis10.1021/ie000690f ↗
29. Non-isothermal degradation kinetics of CaCO3 from different origin
30. Raman spectroscopic study of LiH2PO410.1016/j.ssc.2007.12.011 ↗
31. High-temperature phase transformations in LiH2PO4 and possible solid-state polymerization10.1016/j.ssc.2008.04.011 ↗
32. Wired porous cathode materials: a novel concept for synthesis of LiFePO410.1021/cm062843g ↗
33. Step-wise reduction kinetics of Fe2O3 by CO/CO2 mixtures for chemical looping hydrogen generation10.1016/j.ijhydene.2017.01.159 ↗
34. Synthesis, electrochemical properties, and characterization of LiFePO4/C composite by a two-source method10.1016/j.jallcom.2009.07.116 ↗
35. Optimally estimating the sample standard deviation from the five‐number summary10.1002/jrsm.1429 ↗
36. Cassel · 2011
37. Kinetic analysis of soli-state reactions between powdered reactants10.1111/j.1151-2916.1984.tb19605.x ↗
38. Gallagher · 2003
39. In situ hydrothermal synthesis of LiFePO4 studied by synchrotron X-ray diffraction10.1021/jz2008209 ↗
40. Particle size distribution and electrochemical properties of LiFePO4 prepared by a freeze-drying method10.1016/j.jpcs.2010.02.012 ↗
41. X-ray diffraction methods to study crystallite size and lattice constants of carbon materials