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Fabrication and characteristics of nano LiFePO4/C composites with high capacity and high rate using nano Fe2O3as raw materials
- Source :
- Nano Energy; May 2014, Vol. 6 Issue: 2 p173-179, 7p
- Publication Year :
- 2014
-
Abstract
- Nano LiFePO4/C particles with high capacity and high rate were fabricated by one-step solid-state reaction using nano Fe2O3, LiH2PO4and sucrose as raw materials. The effect of synthesis temperature on the morphology and the electrochemical performance was investigated. LiFePO4/C materials were characterized by differential scanning calorimetry (DSC) and thermogravimetry (TG), X-ray diffraction (XRD), X-ray photoelectron spectrometry (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and the elemental analyzer. The results show that nano Fe2O3can reduce and make uniform the LiFePO4grain size (<100nm) effectively as well as accelerate the solid-state reaction kinetics which is a convenient way for industrialization. The precursor sintered at 740°C for 5h exhibits the highest electrochemical capacity (166.9mAh/g at 0.1C) and the best rate performance.
Details
- Language :
- English
- ISSN :
- 22112855
- Volume :
- 6
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Nano Energy
- Publication Type :
- Periodical
- Accession number :
- ejs33051755
- Full Text :
- https://doi.org/10.1016/j.nanoen.2014.03.017