Preparation and Doping Mode of Doped LiMn2O4 for Li-Ion Batteries

Spinel LiMn 2O 4 is an appealing candidate cathode material for Li-ion rechargeable batteries, but it suffers from severe capacity fading, especially at higher temperature (55 °C) during discharging/charging. In recent years, many attempts have been made to synthesize modified LiMn 2O 4. This paper reviews the recent research on the preparation and doping modes of doped LiMn 2O 4 for modifying the LiMn 2O 4 . We firstly compared preparation methods for doped spinel LiMn 2O 4, such as solid state reactions and solution synthetic methods. Then we mainly discuss doping modes reported in recent years, such as bulk doping, surface doping and combined doping. A comparison of different doping modes is also provided. The research shows that the multiple-ion doping and combined doping modes of LiMn 2O 4 used in Li-ion battery are excellent for improving different aspects of the electrochemical performance which holds great promise in the future. From this paper, we also can see that spinel LiMnO 4 as an attractive candidate cathode material for Li-ion batteries.