Effect of Synthesis Processes on the Microstructure and Electrochemical Properties of LiMnPO4 Cathode Material

Inspired by successful commercialization of LiFePO4, the same olivine-structured LiMnPO4 has been extensively researched due to its higher electrode potential. However, LiMnPO4 shows unsatisfactory electrochemical performance because of poor intrinsic Li+ ion diffusion and electrical conductivity. By choosing an appropriate synthesis route, better electrochemical activity of LiMnPO4 can be obtained. In this review, the relationship between the synthesis process and electrochemical performance is elaborated and discussed. The synthesis process has an important effect on the material morphology, particle/crystal size, crystal direction regulation, porosity, carbon coating, and agglomeration, further affecting the electrochemical properties. We hope that this review could be a good reference for the design and preparation of high performance LiMnPO4 cathode material and push its practical application.