Performance and Safety of Lithium-Ion Batteries Under Hot Desert Climates

The performance, lifespan, and safety of lithium-ion batteries (LIBs) are critically influenced by temperature variations, particularly in challenging environments such as desert conditions where high temperatures can accelerate degradation mechanisms and compromise safety. This study investigates the reliability, performance, and safety of four commercially available 18650 LIBs sourced from different manufacturers under accelerated cycle aging conditions up to 500 cycles at temperatures of 25 degrees C, 45 degrees C, and 55 degrees C. Advanced electrochemical analyses and thermal stability tests were employed to assess the impact of prolonged high-temperature exposure on cell capacity and cycle life. The results highlight that state of health (SOH) and capacity loss are significantly influenced by cell chemistry and aging conditions, with pronounced capacity degradation observed at higher temperatures. Specifically, cells with NCA-based compositions (Type A and Type B) exhibited better thermal stability and maintained higher SOH compared to NMC-based cells (Type C and Type D), which showed increased susceptibility to thermal stress and degradation. These findings underscore the importance of selecting appropriate cathode materials and implementing effective thermal management strategies to enhance the reliability and extend the cycle life of LIBs, crucial for applications ranging from consumer electronics to electric vehicles and renewable energy systems.