Electrochemical performance of NCA based cathodes for variable thickness of electrode through modelling and simulation

Abstract

In this study, modelling of lithium-ion battery (LIB) has been carried out using theoretical simulation. The simulation work has been performed for the better electrochemical performance of the battery with the LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) type cathode material, Graphitic, Li x C 6 as an anode material, and LiPF 6 as liquid electrolyte. Initially, the thickness variation of the cathode material of NCA has been performed. The cycle of the cells made of seven variable thicknesses of the NCA cathode has been estimated. Thereafter, the effect of optimized electrode thickness on the discharge curve of the cell at different C rates such as 0.5C, 1C, 1.5C has been obtained from the simulation results. The voltage drop at the cathode and anode ends due to the SEI layer has been simulated at the respective C rates for first (1 st ) and 2000 th cycles. The results obtained from all three simulations show consistency with the previously reported literature based on experimental work. Hence, the cathode material (NCA) thickness is optimized and chosen easily according to the application and need.