Optimized LiFePO[sub 4] for Lithium Battery Cathodes
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- 1 January 2001
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 148 (3) , A224-A229
- https://doi.org/10.1149/1.1348257
Abstract
LiFePO4LiFePO4 powders were synthesized under various conditions and the performance of the cathodes was evaluated using coin cells. The samples were characterized by X-ray diffraction, scanning electron microscope observations, Brunauer, Emmett, and Teller surface area measurements, particle-size distribution measurements, and Mössbauer spectroscopy. Ab initio calculation was used to confirm the experimental redox potentials and Mössbauer parameters. The choice of a moderate sintering temperature (500°C<T<600°C)(500°C95% of the 170 mAh/g theoretical capacity at room temperature. There are two main obstacles to achieving optimum charge/discharge performance of LiFePO4:LiFePO4: (i) undesirable particle growth at T>600°CT>600°C and (ii) the presence of a noncrystalline residual Fe3+Fe3+ phase at T<500°C.T<500°C. © 2001 The Electrochemical Society. All rights reserved.Keywords
This publication has 21 references indexed in Scilit:
- Full-potential, linearized augmented plane wave programs for crystalline systemsPublished by Elsevier ,2002
- First Principles Study on Factors Determining Battery Voltages of LiMO2 (M=Ti-Ni)Japanese Journal of Applied Physics, 1999
- Thermal Stability of LiFePO[sub 4]-Based CathodesElectrochemical and Solid-State Letters, 1999
- Mapping of Redox EnergiesMolecular Crystals and Liquid Crystals, 1998
- Phospho‐olivines as Positive‐Electrode Materials for Rechargeable Lithium BatteriesJournal of the Electrochemical Society, 1997
- Determination of the Nuclear Quadrupole Moment ofFePhysical Review Letters, 1995
- Thermal stability of LixCoO2, LixNiO2 and λ-MnO2 and consequences for the safety of Li-ion cellsSolid State Ionics, 1994
- Lithium insertion into Fe2(SO4)3 frameworksJournal of Power Sources, 1989
- Lithium insertion into manganese spinelsMaterials Research Bulletin, 1983
- LixCoO2 (0<x<-1): A new cathode material for batteries of high energy densityMaterials Research Bulletin, 1980