LiFePO4 storage at room and elevated temperatures

The stabilities of olivine LiFePO 4 and spinel LiMn 2 O 4 in a LiPF 6 -based electrolyte were investigated by means of atomic absorption spectroscopy. At 85 °C a significant increase in Mn/Fe dissolution was observed in comparison to 60 °C stored cathode materials. However, the comparison indicates a much lower solubility of the LiFePO 4 versus LiMn 2 O 4 . This result shows a new advantage of LiFePO 4 as a promising alternative cathode.