Effect of different sources of iron on the properties of LiFePO4/C for lithium-ion batteries
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According to the performance tests of LiFePO4 prepared by different iron sources, the product of Fe(NO3)3 had a pure phase and good electrochemical performances, while the raw material is cheaper, so Fe(NO3)3 was choosen as the iron source. The best determination of the experiment was that the lithium:iron ratio was 1, the carbon source content was 10 %, the sintering temperature was 700 °C for 6 h, and the sintering process was undertaken in a nitrogen atmosphere. The results showed that the initial discharge capacity of LiFePO4 synthesized in such conditions was 118 mAh/g in 2.5–4.2 V and at 0.1 C rate, and the capacity experienced almost no loss after 20 circulations.
KeywordsLiFePO4 Cathode material Battery performance
- 7.Y. Wang, G. Cao, Developments in nanostructured cathode materials for high performance lithium-ion batteries. Adv. Mater. 20, 2257–2269 (2008)Google Scholar