Synthesis and Characterization of Novel Cathode Material Li5FeO4 for Li-ion Batteries

Antifluorite-type material Li5FeO4 was synthesized and characterized as novel cathode materials for using in a lithium secondary battery. It was prepared by high-temperature solid-state method, LiOH and Fe2O3 as raw materials. The obtained samples were featured by using TG/DTA, XRD, and its specific capacity and cycle property were also measured by LAND cell test system. The results showed that materials obtained by high-temperature solid-state method, that temperatures were 450°C for 10h, then 850°C for 20h and the mole ratios of Li to Fe is 6/1 exhibited single-phase and high capacity. Its first charge capacity and recharge capacity reaches 584.5 and 210.8 mAh/g respectively.