Interface Synthesis of FePO<sub>4</sub> with Different Morphologies and Effect of Morphology on the Electrochemical Performance of LiFePO<sub>4</sub>/C
oleh: Luo Y.-H., He N., Wang Y.-C., Cao W.-G., Feng P.
| Format: | Article |
|---|---|
| Diterbitkan: | Croatian Society of Chemical Engineers 2015-07-01 |
Deskripsi
In our work, interface synthesis method was put forward to prepare FePO4 with different morphologies, and the effect of morphology on the preparation and electrochemical performance of LiFePO<sub>4</sub>/C was investigated. The results showed that the morphology of FePO4 was amorphous and monoclinic at the treatment temperatures of 30 °C and 80 °C, respectively. LiFePO<sub>4</sub>/C prepared from two crystal precursors were both hemispherical hollow with an olivine crystal structure. LiFePO<sub>4</sub>/C produced from the monoclinic structured precursor exhibited smaller- sized morphology and better electrochemical performance, and its discharge capacities were 155.9 mA h g−1 and 141.8 mA h g<sup>−1</sup> at the rates of 0.1 C and 1 C, respectively. After 150 cycles, its capacity retention was about 97.8 % and 95.1 % at 0.1 C and 1 C, respectively