Characterization of LiM[sub x]Fe[sub 1−x]PO[sub 4] (M=Mg, Zr, Ti) Cathode Materials Prepared by the Sol-Gel Method
- 1 January 2004
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 7 (12), A503-A506
- https://doi.org/10.1149/1.1819867
Abstract
A series of phosphates were synthesized via a sol-gel method. Transmission electron microscopy observations show that particles consist of nanosize crystals, ranging from 40 to 150 nm. High-resolution TEM analysis reveals that a layer of amorphous carbon was coated on the surface of the particles, which substantially increases the electronic conductivity of electrodes. The doped powders are phase pure. Near full capacity (170 mAh/g) was achieved at the C/8 rate at room temperature for electrodes. The doped electrodes demonstrated better electrochemical performance than that of undoped at high rate. © 2004 The Electrochemical Society. All rights reserved.Keywords
This publication has 15 references indexed in Scilit:
- Lithium Iron(II) Phospho-olivines Prepared by a Novel Carbothermal Reduction MethodElectrochemical and Solid-State Letters, 2003
- A New Synthetic Route for Preparing LiFePO[sub 4] with Enhanced Electrochemical PerformanceJournal of the Electrochemical Society, 2002
- Characterization of LiFePO4 as the cathode material for rechargeable lithium batteriesJournal of Power Sources, 2001
- Approaching Theoretical Capacity of LiFePO[sub 4] at Room Temperature at High RatesElectrochemical and Solid-State Letters, 2001
- Lithium extraction/insertion in LiFePO4: an X-ray diffraction and Mössbauer spectroscopy studySolid State Ionics, 2000
- Thermal Stability of LiFePO[sub 4]-Based CathodesElectrochemical and Solid-State Letters, 1999
- Effect of Structure on the Fe3 + / Fe2 + Redox Couple in Iron PhosphatesJournal of the Electrochemical Society, 1997
- Phospho‐olivines as Positive‐Electrode Materials for Rechargeable Lithium BatteriesJournal of the Electrochemical Society, 1997
- Synthesis, redox potential evaluation and electrochemical characteristics of NASICON-related-3D framework compoundsSolid State Ionics, 1996
- Multipole analysis of the electron density in triphylite, LiFePO4, using X-ray diffraction dataActa crystallographica Section B, Structural science, crystal engineering and materials, 1993