Effect of FeSO4 purity on low temperature performance of LiFePO4/C

LiFePO4/C was prepared by employing coprecipitation method and carbothermal reduction method using FeSO4 with different purity as the iron source. The purity of FeSO4 has a great influence on the morphology of FePO4, but has little effect on the morphology of LiFePO4/C. The cycling performance decreases with the decrease of purity, and purity has a significant effect on the specific discharge capacities at low temperature. The specific discharge...