Worse still, the effect of humidity has rarely been reported. 7,10–13 In this study, we investigate the effect of humidity on battery performance, in particular the self-discharge characteristics of LIBs, as a function of the storage period, temperature and the type of cathode materials (LiCoO 2 (LCO) or Li (Ni 1/3 Co 1/3 Mn 1/3 )O 2 (NCM)).
With the ongoing development of producing high-quality lithium-ion batteries (LIB), the influence of moisture on the individual components and ultimately the entire cell is an important aspect. It is well known that water can lead to significant aging effects on the components and the cell itself.
It considers the lifetime degradation and thermal hazardous evolution behaviors of lithium-ion batteries under various complex environments, such as charging and discharging conditions, temperatures, vibrations, pressures, and humidity.
In real-world application scenarios, the complexity of the working environment and the sensitivity of lithium-ion batteries mean that the coupling of different environmental factors, such as cycling rates and ambient temperatures, has a significant impact on battery degradation.
The results show that harsh conditions, such as high temperature, low temperature, low pressure, and fast charging under vibration, significantly accelerate battery degradation and reduce the thermal safety of lithium-ion batteries in these application scenarios and working conditions.
Schematic representation of the degradation mechanism of lithium-ion batteries during aging at high and low temperatures . 3.1.1. High temperature Existing studies have reported degradation related to high-temperature aging.