Investigating the Change of Electrode Thickness on Lithium-Ion Battery Performance

The use of lithium-ion batteries in electric vehicles has garnered significant attention from scientists, leading to a focused examination of these batteries and the parameters affecting their performance. Changes in physical, thermal, and electrochemical characteristics can alter the performance of these batteries. In this study, electrode thickness is selected as one of the battery specifications, and its impact on battery performance is investigated. For this purpose, a one-dimensional electrochemical model coupled with a three-dimensional cylindrical thermal model is utilized, varying the electrode thicknesses from ۵۵ micrometers to ۱۳۰ micrometers. The simulation results show that while increasing electrode thickness enhances the battery's energy density due to the increased active material, it also affects other parameters, including discharge performance and the heat generated by the battery. The findings indicate that the increased thickness leads to higher energy density but introduces challenges in thermal management and efficiency during discharge cycles. Properly balancing these factors is essential for optimizing battery performance in electric vehicles, ensuring safety, reliability, and longevity. The insights from this research contribute to the ongoing efforts to enhance lithium-ion battery technology, aiming for improvements that can support the growing demand for electric vehicles and other high-performance applications.