Abstract
In this investigation, carbon-coated LiFePO4 cathode materials were synthesized with a facile hydrothermal method. The structure and electrochemical properties of the materials were investigated by X-ray diffraction (XRD), Roman, transmission electron microscopy-energy dispersive spectroscopy (TEM-EDS), and electrochemical impedance spectroscopy (EIS). By adjusting the mixing concentration of starting materials, a single-crystalline LiFePO4 with an anisotropic rhombus morphology (Space Group: Pmnb No. 62) were successfully synthesized. In addition, the carbon coated on the surface of LiFePO4 material prepared has a lower ID/IG (0.80), which indicates an optimized carbon structure with an increased amount of sp2-type carbon. Electrochemical performance test shows that the carbon-coated LiFePO4 cathode materials have an initial discharge capacity of 146 mAh g-1 at 0.2C.
Original language | British English |
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Pages (from-to) | 295-299 |
Number of pages | 5 |
Journal | Ionics |
Volume | 21 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jan 2015 |
Keywords
- Cathodes
- Electrochemical characterizations
- Electrodes
- Li-ion batteries