LIB Cathode, Phosphate Based

This passage will introduce the production flow of producing Iron Phosphate Lithium LiFePO4, one of the leading phosphate based cathode active materials for lithium ion secondary batteries. Recently, Olivine type cathode materials such as LiMPO4 (M: Mn, Mg, Ni) is rapidly being developed and implemented due to its cheap costs and the fact that it does not require any rare metals. Phosphate based cathodes are synthesized by a calcination reaction under a solid phase method. Its production process is very similar to that of Cobalt based Cathodes. Therefore, the powder processing technologies being utilized are similar as well. However, most precursors for Phosphate iron Lithium are synthesized using a wet process method, additional new powder processing technologies are utilized to separate and clean the powders from the solutions used during the synthesis of precursors before the calcination process, as well as a drying process. The primary calcination process is used for increasing crystallization as well as synthesizing the unreacted materials, while the second calcinations process is required for carbon coating.