Research progress of lithium manganese iron phosphate cathode materials: From preparation to modification

Abstract

LiFePO4 is very promising for application in the field of power batteries due to its high specific capacity (170 mAh−1), stable structure, safety, low price, and environmental friendliness. However, it is well known that the slow electron transport and Li+ transport of LiFePO4 results in a rate performance that is far below the requirements for small batteries, resulting in a low LiFePO4 energy density. In order to solve this problem, LiMn1−xFexPO4 (LMFP) cathode material was synthesized by combining Fe and Mn in a certain ratio, and its material properties were improved. Here, we provide a detailed review of LiMn1−xFexPO4 anode material preparation. In addition, this review focuses on the preparation of LiMn1−xFexPO4 and several modification methods to compensate for the inherent deficiencies of certain materials, as well as predicting their future trends.