Impact of Temperature on the Aging of Lithium-Ion Batteries: Insights from Capacity Testing for Enhanced Battery Management in Sustainable Transportation Systems

This study focuses on a vital element of energy storage systems, particularly lithium-ion batteries, in the effort to cut down greenhouse gases and air pollutants from internal combustion engine vehicles. It investigates the impact of temperature on the aging process of these batteries, offering important insights into their capacity and lifespan. The research involved controlled testing at various temperatures to replicate real-world automotive conditions and evaluate how battery capacity changes over time. Initial characterization of fresh cells was conducted to establish baseline data on their capacity and internal resistance, which helps in understanding how temperature fluctuations affect battery performance. A thorough teardown analysis was then performed using Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) on the electrodes, separator, and electrolyte. This analysis provided an in-depth look at the physical and chemical behavior of the battery components and helped identify degradation mechanisms. The testing matrix incorporated essential factors that impact battery performance, including thermal stress, cycle life, and charge-discharge rates. By accounting for these variables in the experimental design, the study aims to provide a comprehensive understanding of how temperature changes influence battery aging and to develop strategies for improving battery management systems. These findings are essential for boosting the longevity and efficiency of batteries, which is crucial for advancing cleaner transportation solutions and promoting more sustainable energy practices.