Numerical approach for lithium-ion battery performance considering various cathode active material composition for electric vehicles using 1D simulation

The cathode active material, which is one of the four elements constituting a lithium-ion battery (LIB), determines the capacity and power of the battery, making it an important factor that determines the performance of the battery. In this study, NCM, LFP, and LMO, which are representative cathode active materials of LIBs based on electrochemistry, were applied to 18650 cylindrical battery cells. They were expanded to a battery pack model to be mounted on an electric vehicle (EV) to compare and analyze the battery performance according to the application of different cathode active materials. The battery modeling was based on a database provided by the Gamma Technologies LIB simulation, GT-AutoLion. To analyze the thermal stability according to the temperature and the capacity loss of the battery cell resulting from the different C-rate discharges for each positive electrode active material, an electrochemical-based 1D analysis was performed.